Traditional design methods and design methods to improve integration of the two design and comparison of results are given every reasonable under the casing depth interval.
将传统设计方法与改进设计方法结合，并将两个设计结果进行比较，给出每层套管的合理下入深度区间。
If the exhaust system is under a vacuum, the casing must be warmed by gradually introducing the steam, after opening the exhaust valve.
如果排气系统处于真空下，必须在打开排气阀后，逐渐引蒸汽来加热壳体。
While I was at it, I overcast the top edge so I don't need to fold under a hem for the casing.
虽然我在这时候，我阴顶部边缘，所以我不需要折为下套管下摆。
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