Berkefeld filter

A Berkefeld filter is a water filter made of diatomaceous earth (Kieselguhr). It was invented in Germany in 1891, and by 1922 was being marketed in the United Kingdom by the Berkefeld Filter Co. Berkefeld was the name of owner of the mine in Hanover, Germany, where the ceramic material was obtained.

单词	Berkefeld filter
释义	Berkefeld filter 英语百科 Berkefeld filter A Berkefeld filter is a water filter made of diatomaceous earth (Kieselguhr). It was invented in Germany in 1891, and by 1922 was being marketed in the United Kingdom by the Berkefeld Filter Co. Berkefeld was the name of owner of the mine in Hanover, Germany, where the ceramic material was obtained.
随便看	with other measuring means with other objects with other substances with our back against the wall with our eyes glued on with our might and main with our whole heart without a bean without a blink of qualm without a blow without a breach of continuity without a break without a break of without a care in the world without accent without acceptance of persons without accident without additional reagents without a division without a doubt without affection without aftereffect without a grain of Without Agraphia,Alexia Without Agraphias,Alexia