matrass

/ma-truhs/US // ˈmæ trəs //UK // (ˈmætrəs) //

垫草,沼泽地,沼泽草,沼泽

Definitions

n.名词 noun

1
Chemistry.
- : a rounded, long-necked glass container, formerly used for distilling and dissolving substances.

The powder adhering to the matrass should be washed out and thrown on the filter by the help of a little water.
The matrass is then dexterously removed, without letting its water overflow the crucible.
This is made to boil for about 10 minutes, and is then poured off, when the matrass is filled up with distilled water to the brim.
The whole are put into a matrass, and exposed to the sun for two months during the hottest season of the year.
The process being terminated, the matrass will contain about 43 fl.