Downward movement is much faster than upward one.
向下移动比向上移动快得多。
This downward movement forces the valve to move downward off its seat so that it opens.
向下的运动使气门向下移动离开气门座，气门被打开。
Downward movement with the Fast and Feeding speed, the fast forward improve work efficiency;
下压行程具有快进与工进两种速度， 快进提高工作效率；
Most conventional downhole tools operate by upward or downward movement, rotation, or a combination of both.
大多数常规井下工具都是由向上或向下移动、旋转或两者相结合进行工作。
A upward movement means the price stays strong whereas a downward movement means the price is going slump abruptly.
向上跳空代表价格走势强劲，向下调控代表价格急剧转疲。
It is precisely that the vulgarization and the downward movement of the upper class's mysticism was the reason of this situation.
正是由于玄学从上层社会的向下移动和庸俗化，才导致了这样的局面。
Air and fuel are drawn into the cylinder by the downward movement of the piston, the piston then moves up and squeezes this mixture which is then ignited.
空气和燃料，是由各该活塞向下运动，活塞然后移动起来，这是挤出，然后点燃混合气进入气缸。
The upper end of the upward-downward movement mechanism is provided with a cylinder piston connected with a jointing part of a pair of long connecting rods.
下运动机构上端是一个气 缸活塞与一对长连杆的交接处相接；
A centrifugally activated device for controlling the speed of movement of an elevator cab includes the capability of controlling upward and downward movement.
一种用于控制电梯车厢运动速度的离心致动装置，包括控制向上和向下运动的能力。
Large intake vents open so that the output pressure off small increase, thus putting downward movement so that implementing agencies spool valve to open or close.
进气口开大排气口关小使输出压力增加，因此执行机构推杆向下移动使调节阀阀芯开启或关闭。
The manual pressing section makes the downward movement by a slide cylinder and a pressing head driven by a pressing rod, and the travel of the pressing head is controlled by a limited ring;
手动按压部分由按压杆带动滑柱及按压头向下运动，并通过限位环来控制按压头的行程；
A Colombian who wants someone to approach him often signals with a hand movement in which all the fingers of one hand, cupped, point downward as they move rapidly back and forth.
一个哥伦比亚人想要别人靠近他时，他通常会用一个手势，一只手的所有手指都呈杯状，指向下方，同时快速地前后移动。
We think given the current supplies and a strong Australian crop, we would probably see some downward [price] movement there.
我们认为，按照现在的供应状况和澳大利亚的良好收成，我们可能会看到粮价今后会有松动的迹象。
The powerful extension of the leg downward and backward creates the horizontal movement forward.
腿向下和向后有力的伸展产生向前的水平运动。
Woods on a slope below an orchard may retard movement of cold air downward.
如坡地果园的下方有森林容易阻碍冷空气向下排出。
The locks prevent its downward and upward movement at the same time stimulating energy.
收束在阻塞了能量上下运动的同时，也刺激着能量。
Emerging equities had a mixed week, with some stock markets bucking the downward trend of their developed counterparts, and others succumbing to the negative movement.
新兴股市上周表现参差，部分股市一反成熟市场向下走势而上扬，其它股市则表现失利。
The downward vertical movement of filtrate with time after invasion.
泥浆侵入地层后的下沉垂直移动。
The downward vertical movement of filtrate with time after invasion.
泥浆侵入地层后的下沉垂直移动。
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