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。
He quickly grasped a small tree By the side of the precipice and Began to move downward Bit By Bit.
他迅速抓住悬崖边上的一颗小树，一点一点向下移动。
Over the next few weeks, however, prices began to move downward. And the lower they fell, the faster they picked up speed.
但是在接下来的几个星期，股指开始下跌，而且以迅雷不及掩耳的速度下跌。
The law shows that, along with the static pre-load increasing, the dynamical bending strength of concrete would go up to a peak value and then move downward to the static strength.
计算结果显示，不同细观骨料模型具有相似的规律，即随预静载增大，混凝土动弯拉强度上升，至一定峰值后回归到静载强度。
An interest rate cut would mean a drastic move downward for the currency, as all speculative capital would move out of England thanks to it's poor economy and now lower interest rates.
一旦降息，英国经济目前的糟糕情形再加上低利率，势必会让所有的投机资本撤离英国，这样一来英国货币就会严重贬值。
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。
Linden has said it will increase its supply of land to put downward pressure on prices, a move that angered some existing owners of virtual homesteads.
林登表示，扩大土地供应来缓解价格下跌的压力，但此举却激怒了一些现有业主的虚拟家园。
"If you can't change what you did, then downward social comparison helps us gain perspective," Ms. Bauer said. "and those people are able to move on and re-engage in other goals."
鲍尔女士指出：“如果你不能改变你所做的一切，那么向下的社会比较可以帮助我们获得更多憧憬，而且能够让你重整旗鼓向着新的目标继续前进。”
Both client and server operations move the document downward.
客户端和服务器操作都使文档向下移动。
The way to end the downward spiral of resentment is with forgiveness. Forgiveness frees you to move forward, unfettered by the burden of past wrongdoing.
结束无休止的怨恨的方法是心怀宽容。宽恕可以使你从过去所犯错误的束缚中摆脱出来，轻松地向前进。
Meanwhile, the average pace of your anaerobic training should move gradually downward toward your target pace.
同时，您无氧训练的平均配速应该逐渐降低接近您的目标配速。
The results show that the characteristic frequencies of different modes will move to the low frequency domain as the piston moves downward.
结果表明，随着活塞的不断下行，燃烧空腔各阶模式的特征频率向低频方向移动。
To move a hopper or stacker upward or downward.
上下移动送卡箱或接卡箱。
After washing, starting from the bottom, gently brush hair using a downward motion and gradually move up until all of the hair is brushed.
清洗过之后，从底部开始，轻轻地向下梳头发，并且逐渐向上使整个发片都被梳理到。
After washing, starting from the bottom, gently brush hair using a downward motion and gradually move up until all of the hair is brushed.
清洗过之后，从底部开始，轻轻地向下梳头发，并且逐渐向上使整个发片都被梳理到。
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