Black mercuric sulfide, a black powder obtained from mercury salts or by the reaction of mercury with sulfur, used as a pigment.
黑色硫化汞，是来自于汞盐或通过水银与硫磺反应而得到的一种黑色粉末，用作颜料。
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The black liquids, suspensions, molten salts and their intermixtures are the main so - lar radiation absorbing materials for direct absorption-type solar energy collection systems.