自然沉淀 meaning in Chinese

natural sedimentation
plain sedimemtation
plain sedimentation

Racking by gravity , on stainless steel plates 3 or 4 times a year
每年三到四次将自然沉淀的固态物质自槽内取出。
Rock salt , or halite , is mined from natural deposits formed by the shrinking of seas during geological periods
岩盐或岩盐，被开采自然沉淀在地质学的期间。
Abstract : by means of natural , coagulative and sand peak coagulative settling test , the flowing water test of high , sub , and low turbidity water containing most of coarse silt have been research . some results are concluded
文摘:通过自然沉淀、混凝和沙峰型混凝沉淀试验,对以"粗”组分泥沙为主的高浊度水和低浊度水进行了动水试验研究,取得一些成果