体积的涨缩变化产生了地震道上的正、负振幅。
These changes in volume contribute to the positive and negative amplitudes of a seismic trace.
旋击盘周边均布100 ~ 120个旋击头和多个涨缩槽。
Around rotating plate there are 100-120 rotating heads and many collapsible grooves.
四个明袋采用涨缩自如、颇具弹性的“琴袋”式样，旨在便于放置书本、笔记本等必需品之用。
The flexible and elastic style is adopted for the four visual pockets for the purpose of putting book, notebook and other necessities inside.
国内卷取机卷筒涨缩液压缸设计的主要方法是参照国外同类设计，其计算公式计算结果与实际工程相差甚远。
The domestic design of the expanding cylinder of tension reel mostly is done consulting to similar foreign design and the results, generally, are far from the actual work conditions.
物体热则涨，冷则缩。
链条松驰后，可采用缩节或涨紧的方法简单处理。
After the chain slack, can DPC or method tensioner simple process.
采用超强防水环保材料，使地板基材稳定均衡，克服了地板易曲翘变形，干缩湿涨等弊端。
Using super-green waterproof material to improve the floor substrate stability, to overcome the floor's defects of easy deformation and humidity.
采用超强防水环保材料，使地板基材稳定均衡，克服了地板易曲翘变形，干缩湿涨等弊端。
Using super-green waterproof material to improve the floor substrate stability, to overcome the floor's defects of easy deformation and humidity.
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