The solution procedure is made quite simple and convenient by using difference equations to analyse this kind of problem.

文中应用差分方程分析这类问题，使求解过程变得十分简便。

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It is also a vital appliance in the heat treatment of chain, which is the last working procedure in chain made. The strength and toughness of chain can be influenced by this procedure directly.

网带式加热炉是重要的链条热处理设备，链条热处理工序是整个链条制造过程中的最后工序，它直接影响链条的强度和韧性。

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There is a fairly high rate of rejection for this procedure, but progress continues to be made.

有相当高比率拒绝这项程序，但继续取得进展。

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In this procedure, a small incision is made in the abdomen, near or in the navel.

CNN: Ectopic pregnancy

In this delicate procedure the prostate is removed while every effort is made to keep one or both nerves intact.

FORBES: Some Nerve