求移吸量管，移液管的使用方法，請(qǐng)盡量詳細(xì)，萬(wàn)分感謝！

　

2018-12-07 06:08:08 481 0

急求全站儀附和導(dǎo)線測(cè)量的步驟及數(shù)據(jù)處理方法（盡量詳細(xì)），萬(wàn)分感謝。

　

2014-05-10 18:55:42 380 1

請(qǐng)問(wèn)一下表面張力是怎么回事，請(qǐng)盡量詳細(xì)點(diǎn)，通俗點(diǎn)。萬(wàn)分感謝!

　

2011-01-28 02:40:52 568 2

求翻譯，哪位好心人，幫幫忙！萬(wàn)分感謝

This work was supported by Science Foundation Ireland (PIYRA 07/YI2/I1052). The authors acknowledge the European Commission under framework 7 (PERG-GA-2009-249178)， IRCSET and Intel (postdoctoral fellowship to IK and post-graduate scholarsh... This work was supported by Science Foundation Ireland (PIYRA 07/YI2/I1052). The authors acknowledge the European Commission under framework 7 (PERG-GA-2009-249178)， IRCSET and Intel (postdoctoral fellowship to IK and post-graduate scholarship to EDC) for support. We thank Dr Tatiana Perova for granting access to Micro-Raman spectrometer， Dr Daniel Heller (MIT) for fruitful discussions， Dania Movia for technical support. 展開(kāi)

2013-05-03 02:56:42 528 2

移液管和吸量管操作常識(shí)（求權(quán)威答案）

吸量管可分為以下四類：（1）規(guī)定等待時(shí)間15s的吸量管（2）不完全流出式吸量管（3）完全流出式吸量管（4）吹出式吸量管，這四類的移液方式是怎樣的？誰(shuí)有對(duì)應(yīng)的各類吸量管圖片？還有零... 吸量管可分為以下四類：（1） 規(guī)定等待時(shí)間15s的吸量管 （2） 不完全流出式吸量管（3）完全流出式吸量管（4） 吹出式吸量管，這四類的移液方式是怎樣的？誰(shuí)有對(duì)應(yīng)的各類吸量管圖片？還有零點(diǎn)在上和零點(diǎn)在下的吸量管移液方式一樣嗎？（要特別權(quán)威的答案，可以給出我相應(yīng)答案的出處） 展開(kāi)

2018-11-18 08:39:33 488 0

求專家系統(tǒng)解讀 橡膠幾個(gè)名詞 萬(wàn)分感謝！

本人剛進(jìn)入一家大型輪胎混煉部做生產(chǎn)技術(shù)員，主要負(fù)責(zé)部門橡膠制品門尼黏度 硫化曲線及物性測(cè)試目標(biāo)值管控和不良改善，對(duì)橡膠一些名詞未能全面了解望大神幫忙：1.門尼粘度反映的是橡膠什么性質(zhì) 它與后面硫化膠的性質(zhì)有什么聯(lián)系（比如定神拉力，硬度，斷裂強(qiáng)度... 本人剛進(jìn)入一家大型輪胎混煉部做生產(chǎn)技術(shù)員，主要負(fù)責(zé)部門橡膠制品門尼黏度 硫化曲線及物性測(cè)試目標(biāo)值管控和不良改善，對(duì)橡膠一些名詞未能全面了解望大神幫忙：1.門尼粘度反映的是橡膠什么性質(zhì) 它與后面硫化膠的性質(zhì)有什么聯(lián)系（比如定神拉力，硬度，斷裂強(qiáng)度...） 2.MH反映的是橡膠什么性質(zhì) 它與后面硫化膠的性質(zhì)有什么聯(lián)系（比如定神拉力，硬度，斷裂強(qiáng)度...） 3.可塑性是不是反映一個(gè)膠料經(jīng)過(guò)混煉門尼降得大小（分子量變小幅度）4.經(jīng)過(guò)測(cè)試同車膠料不同位置的門尼粘度及比重測(cè)試能否判斷其分散好壞... 展開(kāi)

2013-09-05 02:29:15 568 1

各種化學(xué)工具使用方法，請(qǐng)注明注意事項(xiàng)，詳細(xì)步驟，灰常感謝?。。。。?

比如說(shuō)燒杯等\(^o^)/

2011-08-09 11:40:30 545 2

移液管和吸量管的區(qū)別

　

2006-11-29 10:45:29 1695 3

移液管與吸量管的區(qū)別

　

2012-10-11 10:58:14 503 1

移液管和吸量管的用途

　

2017-11-21 15:24:48 1072 1

移液管和吸量管的區(qū)別

　

2018-11-22 17:11:22 313 0

吸量管和移液管的區(qū)別

　

2015-08-19 04:56:59 428 1

篩網(wǎng)印花的篩網(wǎng)怎么制作，步驟詳細(xì)一下 萬(wàn)分感謝

　

2015-08-08 02:13:04 218 1

石油，煤的成分是什么?請(qǐng)盡量詳細(xì)些.

各種成分都說(shuō)一下.還有，他們都有什么種類?... 各種成分都說(shuō)一下. 還有，他們都有什么種類? 展開(kāi)

2005-12-30 03:28:40 749 6

求日語(yǔ) 日文翻譯幫忙翻譯一下。。。萬(wàn)分感謝

請(qǐng)求項(xiàng)2記載の透明硬脆材料のレーザ加工裝置において、前記半透過(guò)ミラー及び前記反射ミラーにおける凹面のそれぞれの焦點(diǎn)位置が、同位置となるよう配置したことを特徴とするレーザ加工裝置。

2014-03-16 13:43:20 637 3

求專業(yè)的英語(yǔ)達(dá)人幫忙翻譯下 萬(wàn)分感謝

Caution:Do not place your finger over the vent(it pressurizes the sensor) to test the flow indicator when gas is flowing to the sensor.removing your finger (the restriction) generates a vacuum on the sensor and maydamage the sensor(voiding ... Caution:Do not place your finger over the vent(it pressurizes the sensor) to test the flow indicator when gas is flowing to the sensor.removing your finger (the restriction) generates a vacuum on the sensor and maydamage the sensor(voiding the sensor warraty). Positive pressure applications: If the sample pressure is greater than 30 psign an external pressure regulator(optional) is required upsteram of the analyzer to control of sample flow.a pressure regulator with a metallic diaphragm is recommended to prevent high oxygen reading that cuold result from the use of diaphragms constructed of more gas permeable materisls. If other optionoal sample system components such as coiled metal tubing(samples must be colled to at least 35-40℃ for continuous use)，coalescing filters ，scrubbers，etc.are required install the pressure rugulator after the coiled tubing and bofore the other components and the analyzer.a scrubber requires a flow valve upstream for optimum efficiency and response time and that the analyzer flow valve is opened completely. Atmospheric or slightly negative pressure applications: For accurate high ppb and/or low ppm range measurements，an optional simple pump is required downstream of the analyzer to draw the sample through the analyzer.The cacuum drawn on the analyzer and sensor should not exceed 4”of water. Caution:Use ofpump downstream of the sensor requires the floe control valve upstream of the sensor be completely opened to avoid drawing ercessive vacuum in the sensor，which can damage the sensor. If pump over-loading(due to the limitation of low flow rate of the sample gas)is a comsideration，a second throttle valve on the pump’s inlet side may be necessary to provide a bypass path，as illustrated below，to prevent the pump from over-loading and over-heating while miantaining the required sample flow rate within the above-mentioned parameters 展開(kāi)

2010-05-07 12:23:38 494 3

吸量管的使用方法及注意事項(xiàng)

　

2017-05-21 03:35:56 1702 1

幫忙翻譯一下，萬(wàn)分感謝

說(shuō)明一下860DSP是一個(gè)信號(hào)測(cè)量?jī)x器的型號(hào) Here is a good explanation of how the 860 in spectrum mode uses the different settings like dwell wide， narrow， and averaging to look at the spectrum data differently. 860 DSPI Spectrum Analyzer Set... 說(shuō)明一下860DSP是一個(gè)信號(hào)測(cè)量?jī)x器的型號(hào) Here is a good explanation of how the 860 in spectrum mode uses the different settings like dwell wide， narrow， and averaging to look at the spectrum data differently. 860 DSPI Spectrum Analyzer Settings Explanation In the 860 DSPI there are 3 different and unique spectrum analyzer “Detectors”. These detectors may alter the view of a signals appearance， depending on which is selected. Each detector can show a different picture on the same signal because of the way the detector functions. An important selection to our spectrum analyzer is the amount of digital snap shots to be taken. This will be the amount of digital snapshots that is taken in the allocated bandwidth before showing a picture. With this said， the more sampling that is put into the spectrum analyzer the slower it will seem to update， but more opportunity to capture ingress and other interference that can happen inside a cable plant. Dwell Wide- Dwell Wide takes the largest snapshot out of the amount taken， then the 7.5 MHz spectrum is peak held as the 860 DSPI tunes across the selected frequencies in 250 kHz steps. Example: In Dwell Wide， with a 32 sampling rate set， this in turn means the 860 will dwell or sit on a portion of the spectrum defined above， take 32 snap shots， and then display the picture with the max amplitude before moving on to the next portion of bandwidth. Dwell Narrow- Dwell Narrow takes the largest snapshot out of the amount taken， then a 250 kHz spectrum slice is peak held as the 860 DSPI tunes across the selected frequencies in 250 kHz steps. The difference between Dwell Narrow and Dwell Wide is that Dwell Narrow only peak holds across a 250 kHz slice， where as Dwell wide peak holds the entire 7.5 MHz. Example: In Dwell Narrow， with a 32 sampling rate set， this in turn means the 860 will go to the first 7.5 MHz of the spectrum it will look at a 250 kHz slice of the 7.5 MHz and take its 32 samples. These 32 samples will be done in a peak hold fashion， then display the sample that contains the largest signal. Averaging: This detector when selected looks at a 7.5 MHz portion of the spectrum. When it tunes to the first 7.5 MHz portion of the spectrum， it takes into account how much sampling is selected， then takes it’s digital snapshots on the entire 7.5 MHz， averages those pictures together， then shows the final averaged picture. This detector is used for looking at large amounts of bandwidth. Example: In Averaging， with a 32 sampling rate set， this in turn means the 860 will go to the first 7.5 MHz of the spectrum， take it’s 32 digital snap shots， average those together， and show the average of the 32 snapshots. 展開(kāi)

2010-12-10 08:46:08 551 2