文章讨论了垫状细胞产生膨胀运动的机理。
The mechanism of the turgor movement of cushion parenchyma cells are discussed here.
同时，为盾构隧道衬砌接缝遇水膨胀橡胶密封垫防水的设计、施工提出几点建议。
Some suggestions were given to design and construction of hydro-expansive rubber sealing cushion in the shield tunnel.
不锈钢螺丝系列：内六角螺栓，紧钉螺钉，机螺钉，自攻钉，马车螺丝，膨胀螺丝，吊环螺丝，牙条，开口销，平垫，弹垫等。
Stainless steel screw, hex bolt series: tighten screw, machine screw, nail screw, self-tapping screw, expansion bolts, carriage, lifting eyebolt, a tooth, flat mat, play split cotters cushion etc.
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