precleaning

常见例句

It can be seen that precleaning alone would not reduce the total sulfur content of the four coals to levels anywhere near the standards.
参考译文：可以看出，这四种煤的总含硫量仅靠预先洗选将不能降低到完全接近标准规定的水平。
"Is there objective evidence that the precleaning chemistries are being analyzed by the laboratory at the documented frequency?
是否有客观证据说明前处理化学药水有被化验室按照文件规定的程序进行分析？"
Keywords precleaning spout;pickling spout;poaching spout;manufacturing process;
预清洗槽;酸洗槽;漂洗槽;制造工艺;
6"Is their positive air pressure from the cleanroom at the preclean line entrance into the cleanroom?
在前处理线进口的无尘室到无尘室是否有很好的空气压力？"
2"Is there objective evidence that the precleaning chemistries are being analyzed by the laboratory at the documented frequency?
是否有客观证据说明前处理化学药水有被化验室按照文件规定的程序进行分析？"
e) Prior to pickling, all heavy deposits of oils, greases, soils or foreign matter other than millscale, rust or rustscale shall be removed by precleaning as cited in 5.1.
酸洗前，除了铁鳞、铁锈之外，诸如油、油脂、土或杂质等所有的重沉淀物均应通过预清洗来清除，如5.;1中所述。