The commonly used fluxes are limestone and dolomite. 常用的熔剂有石灰石和白云石。
They are made from different materials—— dolomite, tough silk, organdie etc. 它们是用不同的材料做的,白云石、、翼纱等。
Dolomite minerals are the characteristic part in Changjiang but few in Huanghe. 白云石在黄河中极为少见,但却是长江沉积碳酸盐中具有特色的组分。
dolomite
[ noun ]
a kind of sedimentary rock resembling marble or limestone but rich in magnesium carbonate
<noun.substance>
a light colored mineral consisting of calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer
<noun.substance>
dolomite \dol"o*mite\ (d[o^]l"[-o]*m[imac]t), n. [After the French geologist Dolomieu.] (Geol. & Min.) A mineral consisting of the carbonate of lime and magnesia in varying proportions. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. It includes much of the common white marble. Also called {bitter spar}.