优选地,该粘合剂层在植针步骤期间被植入的纤维穿过,且产品在固化步骤前发生20 - 50%的表面收缩。
Preferably, the adhesive layer is penetrated by the needled fibers during the needling step and the product is shrunk in area by 20-50% before the consolidation step.
太空地质学家猜测这些陡坡是在几十亿年前当行星表面冷却收缩时开始形成的。
Astrogeologists suspect that these scarps having formed billions of years ago as the planet's surface cooled and shrank.
试想一下,有一个橡皮圈箍在苹果的表面上,然后这个橡皮圈慢慢的收缩,就像从苹果表面上滑落一般的收缩,直到它变成了一个点。
Imagine an elastic band stretched over the surface of an apple. The band can slowly shrink, moving as though it is slipping from the surface, until it becomes just a dot on the apple's skin.
You know, even some goes pass you on the street and you don't smile ostensibly you don't smile-- there are certain micro-muscles in your face that are moving that actually make you feel better.
即使路人与你擦身而过时,你没笑,表面上你没有笑-,但你面部的细微肌肉,会收缩,让你感觉更好。
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