The valve axis adopt stainless steel, it has good abradability and anti - causticity.阀杆采用不锈钢, 有良好的抗腐蚀性,抗擦伤和耐磨性能.Especially, the measure of some causticity liquid is very difficult using the old flow meter.特别是工业中对一些具有腐蚀性的...
Biologists need to compare xerophyte and hydrophyte生物学家需要对比旱生植物和水生植物。Hydrophyte A plant found growing in water or in extremely wet areas.水生植物:是生长在水中或是极端潮湿的环境中的植物.A new type of ecological floating bed was developed that c...
His part in the affair was quite open and aboveboard.他参与这件事完全是正大光明的.I think everything ought to be aboveboard.我觉得什么事情都应当开诚布公.His business dealings were aboveboard.他的生意来往是光明正大的....