乙腈连续回收装置是与丙烯腈生产主装置相配套的。
Acetonitrile continuous recovery plant is a subsidiary part of acrylonitrile production unit.
在15世纪早期，人们发明了螺旋弹簧或均力圆锥轮，尽管它的主弹簧的张力不断变化，但仍能对计时装置的齿轮保持恒定的力。
In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring.
主数据还可以是关于地点、实体、设备和装置的事实和关系。
Master data could also be facts and relationships of locations, entities, devices, and equipment.
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