日勝（rs-4500）怎么過濾水怎么抽水，高分求，在線等。
pym395649829-
水是昨天剛剛換的，今天就有點臟了，求解還有怎么抽水。... 水是昨天剛剛換的，今天就有點臟了，求解 還有怎么抽水。 展開
全部評論(3條)
贊(17)
回復(fù)(0)
熱門問答
- 日勝（rs-4500）怎么過濾水怎么抽水，高分求，在線等。
- 水是昨天剛剛換的，今天就有點臟了，求解還有怎么抽水。... 水是昨天剛剛換的，今天就有點臟了，求解 還有怎么抽水。 展開
2011-05-21 16:28:22
624
3
- 在線等SQL數(shù)據(jù)庫怎么過濾空字符
2017-01-15 08:15:15
498
1
- 過濾的濾用拼音怎么拼？？在線等
2015-10-07 12:46:58
1367
2
- 求助，急，在線等，換了有毒過濾棉怎么處理
2017-12-05 13:36:21
423
1
- 擠出機英語翻譯。。。在線等。高分懸賞
- Simplified Flow Theory for Screw Extruders The flow behavior of a viscous liquid in the channel of an extruder screw is shown to be similar to the flow behavior of viscous liquids between infinite parallel plates， one of which is station... Simplified Flow Theory for Screw Extruders The flow behavior of a viscous liquid in the channel of an extruder screw is shown to be similar to the flow behavior of viscous liquids between infinite parallel plates， one of which is stationary and the other moving. Assuming Newtonian behavior of the liquid， a differential equation was derived which relates the rate of extrusion and the die pressure to the screw and die geometry and to the operating variables. Integrated flow equations are given for the special case in which the viscosity of the liquid is constant throughout the screw channel (isothermal extrusion). Equations are also given for the case in which the dimensions of the screw channel are functions of their position along the length of the screw. IN THE preceding paper ( 1 )o f this symposium the literature pertaining to the problem of viscous flow in extruders was reviewed. In this paper the development of simplified but more useful flow equations is presented. The synibols and nomenclature used in this paper are defined in the preceding paper (1). The flow mechanism of the viscous liquid in the helical channel of the screw can be better understood if one imagines that the channel be unrolled and laid out on a flat surface. Figure 1 shows this concept of the screw channel. If the lower plate， representing the screw surface， is held stationary and the upper plate， representing the barrel surface， is moved in the direction of the arrow， the relative motions will be the same as those existing in an extruder where the barrel is stationary and the screw rotates. Assuming that the liquid wets both surfaces， the motion of the barrel drags the viscous liquid along with it， while the stationary plate exerts an equal and opposite drag. The velocity of the liquid， relative to the screw， is a maximum at the barrel surface and zero at the screw surface. There is also a directional factor involved， since the channel is inclined at angle p to the direction of motion. Therefore， in computing the flow rate in the channel we break up the velocity into two components: one of these acts directly down the channel， and the other acts at right angles to it. We call the component which acts down the channel drag velocity， and the component which acts at right angles to this transverse velocity. At the end of the channel there is generally a die or some other restriction to flow. This sets up a pressure gradient down the channel causing a flow in the reverse direction to the drag flon. There is one other flow that must be considered. Generally the screw does not fit perfectly inside the barrel. In other words， there is a clearance between the top of the screw threads and the barrel surface. 展開
2009-03-29 12:37:44
653
2
- 三階低通濾波器的傳遞函數(shù)怎么求，在線等，謝謝！
- 三階低通濾波器的傳遞函數(shù)怎么求，在線等，謝謝
2014-01-12 07:48:29
652
2
- 加速度傳感器輸出（急，在線等，給高分）
- 遠(yuǎn)東測振（原北京測振儀器廠）的YDI-37內(nèi)裝電路加速度計的輸出有人了解嗎？網(wǎng)址是這個：http://www.vmif.com/product7.html 與技術(shù)支持交流得到的是：輸出為交流電壓信號，正負(fù)5V范圍。 關(guān)鍵是不理解這個交流電壓信號輸出，以前用到的都是直流輸出的。請知情... 遠(yuǎn)東測振（原北京測振儀器廠）的YDI-37內(nèi)裝電路加速度計的輸出有人了解嗎？網(wǎng)址是這個：http://www.vmif.com/product7.html 與技術(shù)支持交流得到的是：輸出為交流電壓信號，正負(fù)5V范圍。 關(guān)鍵是不理解這個交流電壓信號輸出，以前用到的都是直流輸出的。請知情人幫忙解答一下。謝謝了。在線等！ 展開
2009-10-17 01:42:10
441
3
- 日勝魚缸的溫度控制器怎么總顯示96度啊?
2015-05-07 01:03:45
580
2
- java編寫Excel過濾小工具？？？在線等
- 通過java讀取兩個Excel表，單列比較過濾我自己會，得到的結(jié)果頁僅僅是過濾了ID，可是這樣過濾的結(jié)果不是我想要的，我想要的是ID后面還要跟著其他列的值，如果把其他列的值綁定在ID后面... 通過java讀取兩個Excel表，單列比較過濾我自己會，得到的結(jié)果頁僅僅是過濾了ID，可是這樣過濾的結(jié)果不是我想要的，我想要的是ID后面還要跟著其他列的值，如果把其他列的值綁定在ID后面而又可以單單用ID過濾的呢？？？？？ 展開
2014-12-04 09:29:33
471
2
- Python過濾關(guān)鍵詞？？？怎么做呢，在線等
- Python能夠像SQL那樣做關(guān)鍵詞過濾嗎如select*fromawherealike‘%b%’Python中如何過濾含有某個字段的字符串或者數(shù)字呢？？？... Python能夠像SQL那樣做關(guān)鍵詞過濾嗎 如select * from a where a like ‘%b%’ Python中如何過濾含有某個字段的字符串或者數(shù)字呢？？？ 展開
2015-03-16 11:52:18
573
2
- 我的這種過濾盒。過濾材料怎么擺放才比較好，在線等。急
2018-11-15 07:36:46
509
0
- 量杯怎么能量面粉 在線等
- 買錯了 買了10個有刻度的量杯 1/4tsp1.25ml 1/2tsp2.5毫升 請問 這個可以量面粉么 12.5G面粉大概裝哪個里面 多少杯？、 請詳細(xì) 在線等
2011-03-01 00:55:11
600
2
- 這種是什么石頭？過濾的？在線等， 急！
2017-08-13 15:38:16
479
2
- 關(guān)連查詢 mysql 過濾數(shù)據(jù) 在線等。。。急
- 我現(xiàn)在有幾個表需要關(guān)聯(lián)查詢，其中有一個表中有一個字段是default。我需要有限查找default=1的，其次是default=0的，但我不能把default=1寫在where中，這樣假如沒有default=1的卻有de... 我現(xiàn)在有幾個表需要關(guān)聯(lián)查詢，其中有一個表中有一個字段是default。我需要有限查找default=1的，其次是default=0的，但我不能把default=1寫在where中，這樣假如沒有default=1的卻有default=0的數(shù)據(jù)也會被過濾掉。。求大神幫忙。。。。 優(yōu)先查找=1的，并且數(shù)據(jù)庫里有同一個userid不止一條數(shù)據(jù) 展開
2012-04-18 17:34:46
407
1
- 求lightcycler480數(shù)據(jù)分析軟件，急，在線等！
2015-08-21 05:51:35
315
2
- 求甲烷的冰點，在線等。。。
2016-01-09 18:39:49
395
2
- 怎么消除保養(yǎng)故障燈在線等
2018-05-27 05:33:13
379
2
- 濾紙過濾時怎么潤濕，急求！
- 如題
2013-07-13 08:16:42
1198
2
- 高分求翻譯 在線等 有點長請耐心點，我可以追加分階段 大俠幫忙
- 1. NOTE The Effect of Lanthanide Oxides as a Support for Ruthenium Catalysts in Ammonia Synthesis 2. Ruthenium is known to show significant activity for ammonia synthesis， particularly when promoted with alkali metal compounds， some showin... 1. NOTE The Effect of Lanthanide Oxides as a Support for Ruthenium Catalysts in Ammonia Synthesis 2. Ruthenium is known to show significant activity for ammonia synthesis， particularly when promoted with alkali metal compounds， some showing greater activity than iron catalysts under atmospheric pressure (1， 2). In fact， ruthenium catalysts may be regarded as second-generation ammonia catalysts right alongside iron catalysts. Currently， a type of ruthenium catalyst is already being used in a commercial ammonia plant (3)， proving its potential for promising applications in industry. 3. In conclusion， we found that lanthanide oxides (CeO2， Sm2O3， La2O3) were the most effective supports for ammonia synthesis. Furthermore， a significant increase in activity was observed by reduction at high temperatures. Among lanthanide oxides， Ru/Sm2O3 and Ru/La2O3 were found to be more active while only Ru/CeO2 maintained stable activity for a long period of time. Our further studies will focus on the role hydrogen poisoning playing in these systems. 展開
2009-06-04 01:23:43
364
3
4月突出貢獻(xiàn)榜
推薦主頁
最新話題
滬公網(wǎng)安備 31011502008050號
參與評論
登錄后參與評論