久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

The valve axis adopt stainless steel, it has good abradability and anti - causticity.閥桿采用不銹鋼, 有良好的抗腐蝕性,抗擦傷和耐磨性能.Especially, the measure of some causticity liquid is very difficult using the old flow meter.特別是工業(yè)中對一些具有腐蝕性的...

causticity的音標：causticity的英式發(fā)音音標為：[k?:s't?s?t?]causticity的美式發(fā)音音標為：[k?s't?s?t?]...

n.尖刻，苛性度，刻薄...