In the closed seam, the pyrogenic rock compressed and compacted the structure coal. There is a stress concentrated at the tip of the structure, which could provide the inner energy for the gas.
火成岩对煤层挤压揉皱形成构造煤，同时构造尖灭端应力集中，提供了足够的瓦斯热力学能。
Lee brings out a small vintage teddy bear (seen above) and starts to sew the back seam closed.
李先生说着拿出了一个小泰迪熊(见上图)，在熊的背上缝起针来。
Tuck the seam allowance inside the toe and hand-stitch the toe closed with little neat backstitches.
将接缝塞进脚趾里面，有细小整齐的黑色针脚缝合脚趾部分。
Lee brings out a small vintage teddy bear and starts to sew the back seam closed.
李先生说着拿出了一个小泰迪熊，在熊的背上缝起针来。
He found that a seam in his rubber diving suit was torn, so he seared it closed with a hot iron.
接着他又发现他的橡胶潜水衣的接缝撕开了，于是他又用熨斗灼烧接口，使接口复合。
Under the effect of geostress, the coal-seam permeability decreases sharply and the fissure gradually tends closed.
在地应力的作用下，煤储层渗透率急剧下降，裂缝逐渐趋于闭合。
The spiral welded pipe weld seam probe frame has the benefits that: (1) the flexible spindle is adopted, so that a probe and a weld seam can be fully closed, so as to reduce error;
本发明的有益效果是：1）采用柔性主轴，使探头和焊缝能保证完全弥合，减少误差；
The spiral welded pipe weld seam probe frame has the benefits that: (1) the flexible spindle is adopted, so that a probe and a weld seam can be fully closed, so as to reduce error;
本发明的有益效果是：1）采用柔性主轴，使探头和焊缝能保证完全弥合，减少误差；
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