精砂 meaning in Chinese

concentrate

Carbo super finishing stick uses the effect of pressurization and swing with forward and backward to make the surface of work piece mirror shinning
超精砂条研磨是利用加压及往覆式摆振作用将工作物表面镜面化研磨处理。
Abstract : this paper introduces a kind of special technology to treat low grade molybdate and sodium molybdate which makes frist ammonium leaching of molybdenum up to above 96 % , and frist bases leaching of molybdenum up to above 97 % , with the 0 . 5 % 1 . 0 % of total molybdenum amount washed away and the less than 4 % of molybdenum amount thrown away . consequently , the solution and product has gained arise of high purity
文摘:介绍了处理低品位钼精砂生产钼酸铵及钼酸钠的工艺，钼的一次氨浸率达96 %以上，一次碱浸率达97 %以上，随同废液流失的钼占总投入钼量的0 . 5 % 1 . 0 % ，弃渣含钼小于4 % ，所得溶液及产品纯度高。