Chaindevice USES caterpillar chain, and chain plate adopts double circular and single circular arc form two, which is impact resistance, wear-resisting, no leakage.
链条装置采用履带链条，链板采用双圆弧和单圆弧两种搭接形式，抗冲击，耐磨顺，不漏料。
2
That programme was about “weaponisation”: the fiddly business of making a device that can set off a chain reaction in nuclear fuel.
该计划致力于武器化：虽然制造在核原料中引发链式反应的设备是一件高精细度的工作。
3
The wooden box is actually a homemade device for doing polymerase chain reactions (PCR), a process that turns small samples of DNA into quantities large enough to analyze.