新浇筑混凝土的收缩必须已经完成，否则以后高强彩色水泥自流平可能会因为混凝土自身收缩开裂而导致开裂。
The new pouring of concretes hrinkage must have been completed, or after the cement-based self-leveling may be due to theirs hrinkage cracking of concrete caused by cracking.
天文学家的理论是，当一个巨大的物体在其自身的引力作用下灾难性地收缩，只留下一个强大的引力场，且没有任何东西能逃脱时，黑洞就形成了。
Astronomers theorize that a black hole forms when a massive object shrinks catastrophically under its own gravity, leaving only a gravitational field so strong that nothing escapes it.
如果多条液态天线与小型收音机设备相连，然后嵌入桥梁内，这也天线会随着桥梁变化而扩展或收缩，并且具有自身调节功能。
If lots of flexible antennas attached to small radio sets were placed inside a bridge, they would expand or contract along with the bridge and so would constantly retune themselves.
两侧肌电图波幅、等长收缩时最大强直收缩张力及持续时间进行自身t检验比较均无显著差异。
There was no significant difference int test in EMG wave amplitude, maximum tetanized systole tensile strength and duration of isometric contraction.
当一颗质量超过我们的太阳目前质量1.4倍的巨星的内核耗竭其核燃料时，它便无法支撑自身的重量，并收缩成为一颗小型中子星。
When the core of a giant star whose mass surpasses 1.4 times the present mass of our Sun exhausts its nuclear fuel, it is unable to support its own weight and collapses into a tiny neutron star.
首先玉米蛇利用口器牢固地咬住猎物，然后利用自身细长的身体迅速将猎物缠绕几圈，同时身体进行强而有利的收缩，直到猎物窒息而死。
First a corn snake bites the prey in order to obtain a firm grip, then it quickly wraps one or more coils of its body around the victim. The snake squeezes tightly until it suffocates the prey.
首先玉米蛇利用口器牢固地咬住猎物，然后利用自身细长的身体迅速将猎物缠绕几圈，同时身体进行强而有利的收缩，直到猎物窒息而死。
First a corn snake bites the prey in order to obtain a firm grip, then it quickly wraps one or more coils of its body around the victim. The snake squeezes tightly until it suffocates the prey.
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