In the hole section, a metal which liquefies at a use temperature is stored.

在所述孔部内容纳有在使用温度中成为液体的金属。

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The construction of P202-2H well is hard due to long horizontal hole section and large string friction. High safety coefficient for strings in construction is required.

2H井施工难度大：水平井段长，管柱摩阻大，对施工管柱要求安全系数高；

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The various ram blocks can be changed in the ram preventers, enabling the well team to optimize BOP configuration for the particular hole section or operation in progress.

闸板防喷器中不同的闸板块可以更换，能够使井队优化防喷器的外型，对于某一特殊的井眼部分或者作业进程。

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The technique means only two or three tiny key-hole incisions are made in the cornea, with the unhealthy section removed using special instruments and the donor cornea inserted through the opening.

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Section 1504 presents the classic problem of trying to fit a square peg into a round hole.

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