如果在比较规范的市场，生产的周期比较长，你可以在销售订单之前生产产品或确认部件。

If the production time is long in relation to the standard market delivery time, you can produce the product or certain assemblies before there are sales orders.

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将隔震结构的周期与临界周期和最大隔震周期比较，就可以得到相应高宽比限值的表达式。

By comparing the isolation period with the critical and maximum periods, the limit ratio can be obtained by using the corresponding formulas.

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针对胜坨油田有杆泵井检泵周期比较短的突出问题，进行了两次有杆泵井失效原因调查与分析。

In the light of short production cycle of rod pumping Wells in Shengtuo Oilfield, the causes of the well failure are investigated twice.

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So, if we look on the periodic table, comparing, for example, s to o, if we have s it's below o, what happens to ionization energy as we go down a table?

那么，如果我们看周期表上，比较，比如，硫和氧，硫在氧下面，当我们沿着表向下看的时候,电离能是怎么变化的？

麻省理工公开课 - 化学原理课程节选