concentrators

1. 1.

   One who concentrates.

   专注的人；专心者

2. 2.

   A hub.

   集线器；集中器

3. 3.

   An apparatus for the separation of dry comminuted ore, by exposing it to intermittent puffs of air.

   通过间歇气流分离干燥粉碎矿石的装置

4. 4.

   A frame or ring of wire or hard paper fitting into the cartridge case used in some shotguns, and holding the shot together when discharged, to secure close shooting; also, a device for slightly narrowing the bore at the muzzle for the same purpose.

   一种由金属丝或硬纸制成、装在某些霰弹枪弹壳内的框架或环,发射时使弹丸聚拢以实现近距离密集射击；亦指为相同目的而将枪口内径稍微收窄的装置

集线器；集中器；通过间歇气流分离干燥粉碎矿石的装置；一种由金属丝或硬纸制成、装在某些霰弹枪弹壳内的框架或环,发射时使弹丸聚拢以实现近距离密集射击；亦指为相同目的而将枪口内径稍微收窄的装置；集中者；浓缩器

Connections

Learner notes