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• 2018-11-28 04:38發(fā)布了問(wèn)答

  懂的進(jìn)~硬盤(pán)錄像機(jī)接紅外對(duì)射探頭必須要接報(bào)警主機(jī)才可以嗎

  紅外對(duì)射探測(cè)器接硬盤(pán)錄像機(jī)后面的報(bào)警輸入可以報(bào)警嗎？還是需要格外加報(bào)警主機(jī)。

  347人看過(guò)

• 2017-04-16 01:20發(fā)布了問(wèn)答

  主動(dòng)式紅外探測(cè)器和被動(dòng)式的區(qū)別是什么

  　

  627人看過(guò)

• 2017-03-12 18:37發(fā)布了問(wèn)答

  消防紅外火焰探測(cè)器需要找oem什么資質(zhì)

  　

  437人看過(guò)

• 2013-12-03 16:23發(fā)布了問(wèn)答

  我有一段英文，看不明白，求翻譯

  Thetubewillbesupportedbypillarswhichconstrainthetubeintheverticaldirectionbutallowlongitudinalslipforthermalexpansionaswellasdampenedlateralsliptoreducetheriskposedbyeart... The tube will be supported by pillars which constrain the tube in the vertical direction but allow longitudinal slip for thermal expansion as well as dampened lateral slip to reduce the risk posed by earthquakes. In addition， the pillar to tube connection nominal position will be adjustable vertically and laterally to ensure proper alignment despite possible ground settling. These minimally constrained pillars to tube joints will also allow a smoother ride. Specially designed slip joints at each stations will be able take any tube length variance due to thermal expansion. This is an ideal location for the thermal expansion joints as the speed is much lower nearby the stations. It thus allows the tube to be smooth and welded along the high speed gliding middle section. The spacing of the Hyperloop pillars retaining the tube is critical to achieve the design objective of the tube structure. The average spacing is 100 ft (30 m)， which means there will be near 25，000 pillars supporting both tubes and solar panels. The pillars will be 20 ft (6 m) tall whenever possible but may vary in height in hilly areas or where obstacles are in the way. Also， in some key areas， the spacing will have to vary in order to pass over roads or other obstacles. Small spacing between each support reduces the deflection of the tube keeping the capsule steadier and the journey more enjoyable. In addition， reduced spacing has increased resistance to seismic loading as well as the lateral acceleration of the capsule. 有些橋墩與管道之間的細(xì)節(jié)問(wèn)題希望能仔細(xì)處理清楚，十分感謝??！ 追加15分！ 能手動(dòng)翻譯一下嗎？！ 展開(kāi)

  293人看過(guò)

• 2012-05-12 14:47發(fā)布了問(wèn)答

  家用報(bào)警器的紅外探頭，怎樣安裝才不會(huì)探測(cè)到寵物

  　

  382人看過(guò)

• 2012-01-03 00:28發(fā)布了問(wèn)答

  夜視儀的工作原理是什么?

  　

  473人看過(guò)

• 2009-03-05 23:42發(fā)布了問(wèn)答

  容易引起明火和爆炸的場(chǎng)所用紅外火焰探測(cè)器好，還是紫外火焰探測(cè)器好？

  請(qǐng)說(shuō)明理由或規(guī)范性條文，謝謝！

  601人看過(guò)