Cu-Sn alloy coating with different Sn content can be replacement plating out on iron and steel surface in a solution comprising of copper sulfate, stanous sulfate, complexant and stabilization agent.

铁件在硫酸铜、硫酸亚锡、络剂、稳定剂等组成的溶液中,可以置换覆不同锡质量分数的铜- 锡层,其工艺可替代氰化物预铜,氰化物污染,是现电清洁生产措施之一。

Addition of dechlorinating agent can reduce or eliminate the acute toxicity caused by disinfection byproducts.It may be because that the reaction of dechlorinating a...

投加脱氯剂可减小甚至副产物引起的急性毒性,其最可能原因是脱氯剂与一部分副产物反应而生成了毒性较小甚至没有毒性的物质。

Experiments show that causticizing by adding a small quantity of slaked lime can eliminate the interference of carbonate ions and humic acid salts.

添加少量的熟石灰可即刻碳酸根和腐植酸盐等有机杂质的影响。

Some of the observer errors associated with timing over a measured length may be overcome by the use of the enoscope.

观测员在测定车辆通过已知距离的时间中所发生的误差，可利用一种人形视车镜加以。