往复泵启动前必须将排出管路中的阀门打开。
Reciprocating pump discharge pipe must be before the start of the valve to open.
有一种突变的基因能够调控肿瘤细胞使其在化疗药物发挥作用前将药物泵出细胞外，从而具有抗药性。
One probably made the cancer drug-resistant by enabling the tumor cells to pump chemotherapy drugs right out of the cell before they could do their work.
后向泵浦结构，输出信号的光功率相对高于前向泵浦输出信号的光功率。
The output powers of signals in backward pumping configuration are higher comparatively.
具有良好的自吸性，故每次开泵前无须灌入液体。
Have good self-priming, and so every time there is no need to open before the pump filled with liquid.
在货物发运前，每泵测试！
可单独作低真空泵用，也可与其他高真空泵组合作前级泵用；
Used either solely as Rough Pumps, or in combination with other high vacuum pumps as Backing Pumps.
在前级泵与主泵中间串联一个电磁真空充气阀，随前级泵开关而启闭。
In between, an electromagnetic vacuum inflation valve is installed in series, which opens and closes with the switch of the pre-stage pump.
针对TFT - LCD驱动芯片的电荷泵，设计了一个带密勒补偿和一条前馈通路的缓冲电路。
A buffer with Miller compensation and feed-forward path for charge pump of TFT-LCD driver IC was designed.
检查位于燃油输送泵前的三通燃油切换阀，并转换到MDO侧。
Check 3-way fuel oil selection valve located before fuel oil pump unit and change the 3-way valve to MDO/MGO side.
本文研究单级铒镱共掺光纤放大器，采用前向侧面泵浦技术。
This paper studies the single-stage Erbium-ytterbium co-doped fiber amplifier, using the forward side-pumping technology.
讨论了计量泵的泵供量、泵前压、侧吹风风速等工艺条件对产品的纤度、条干及上油率的影响。
In this paper, influences of supply capacity and prepressure of pumps, air speed of quench wind on yam fineness, oil pick-up and their CV values are discussed.
潜水泵的工作原理：潜水泵开泵前，吸入管和泵内必须充满液体。
The working principle of submersible pumps: submersible pump pump before opening, suction pipes and pumps must be filled with liquid.
为了最小化油蒸汽的回流，一些冻干机在真空泵和前箱间设计了弯曲的管路。
In order to minimize oil vapor migration, some lyophilizers are designed with a tortuous path between the vacuum pump and chamber.
洒水车配备的是离心式洒水泵，该泵每次吸水前，必须向水泵内加入一定量的引水，加完后必须关闭加水口。
Sprinkler is equipped with a centrifugal pump, the pump every time before water, must be added to a certain amount of water to the pump, plus the need to close the water inlet.
与市售双层渗透泵片相比，夹芯渗透泵片免去了打孔前的药物层辨认过程，制备过程简化。
Compared with the commercialized push pull osmotic pump tablet, sandwiched osmotic pump tablet is easy in preparation with exempting identification of drug layer before drilling.
理解泵测试的原理并现场指导测试操作工按照WI和程序搭建测试回路，检查和确认泵在启动前没有任何潜在危险因素；
Understand pump test theory and guide test fitter to follow the WI and procedure to build the test loop. Check and make sure no any potential issue before pump start .
本机组采用罗茨泵作为主泵，以旋片式真空泵作为前级泵。
The set takes Roots pump as its main pump and spinning vacuum pump as pre-stage pump.
本机组采用罗茨泵作为主泵，以旋片式真空泵作为前级泵。
The set takes Roots pump as its main pump and spinning vacuum pump as pre-stage pump.
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