Seven years ago his father, Robert, produced a diamond in a high-pressure chamber of carbon gas and dropped it into an acid solution to clean it off.
七年前他的父亲罗伯特在一间高压碳气室中制造了一颗钻石，把它放入酸性溶液中清洗干净。
2
The disk type module is the core of the water softening plant and is characterized in that the water softening chamber is filled with single strong acid cation exchange resin.
圆盘式膜堆是该软水装置的核心部分，其特征是软水室中填充单 一的强酸性阳离子交换树脂。
3
The device comprises an alkali feeding pipe, an acid feeding pipe, a mixing chamber, a rotation mixing chamber, and a nozzle.