Please put each bottle in a foam plastic casing and then in a thick paper box.
译文：请将每个瓶子加一个塑料泡沫套并装在后纸盒内。
The casing strength design charts presented by this paper can be used to check the safety of the casing in salt bed or help perform casing strength design when the load is known.
可用来检测盐岩等流变地层中下入套管的安全性或在已知套管外载时进行套管强度设计。
Well logging technology and techniques for gas drilling, foam drilling and casing drilling are summarized and analyzed in this paper.
简要介绍了气体钻井、泡沫钻井和套管钻井等特殊钻井技术。
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