To improve well-operation performance, capillary suction-time testing was performed to determine salt concentration required to prevent clay swelling.

为了提高井下作业的效果，通过测试毛管渗吸时间来确定抑制黏土膨胀所需的盐浓度。

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Suction by mouth, originally designed to prevent illness at a time of little medical knowledge, was not required by Jewish law, he said.

ECONOMIST: Circumcision