Downward movement is much faster than upward one.

向下移动比向上移动快得多。

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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。

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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。

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Monetary easing which includes downward movement of short-term interest rates must surely be more effective than monetary easing without downward movement of short-term interest rates.

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While there had been some hope two weeks ago that a short-term bottom was being established, the continued downward movement of stock prices has further frayed nerves.

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"Getting downward movement on IT prices and easing the bite of price discrimination should be an important micro-economic priority - so I'm looking forward to hearing from these firms about their pricing approaches, " he added.

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