而当裂缝的导流能力一定时，裂缝半缝长对油井IPR曲线的影响明显，提高裂缝半缝长能显著增加油井的产量；

When the half- length of a fracture is given, the influences of fracture conductivity on IPR curves of oil wells are relatively small.

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而另一半的元凶则是飞机自身的结构问题：颠簸不平的气流穿梭过往时同起落架、翼缝和襟翼等结构相遇制造了另一半噪音。

But the frame of the aircraft itself is to blame for the other half: the bumpy air flow over the undercarriage and the slots and flaps of the wings creates the rest of the racket.

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他流失了一半的血，需要缝500针钉200个钉子来缝合那么深的伤口。

He had lost half of his blood and required more than 500 stitches and 200 staples to close the deep gashes.

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