The pull rod is screwed into the inside thread of the anchor head.

这是钻杆丝扣油，不能用在钻铤丝扣上。

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It is introduced that manufacturing principle of inside thread copper pipe-for the Heat Exchange Element of air condition.

简单介绍了空调器热交换元件——内螺纹铜管的制造原理。

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It is also introduced that typical thread form and performance as well as the production status and developing prospect of inside thread copper pipe abroad and at home.

介绍了典型螺纹结构和性能，以及国内外内螺纹铜管的生产现状和发展前景。

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After years of painstaking work and much trial and error, Fujino and fellow researchers discovered a way of putting the medicine inside microcapsules made of the same material as surgical thread.

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