他们催讨拖欠的工钱.They are urgent for payment of arrears of wages.我如果不到万不得已的时候,也决不会催讨的.I wouldn't be here bothering you if I could help it.食品商每天通过电话催讨他的顾客.The grocer dunned his customers every day by telephone....
A haematocrit test measures the total volume that red blood cells take up in the blood.红细胞压积则测定血液中红血球的总容量.Methods: The changes of blood viscosity, haematocrit, platelet aggregation and fibrinolytic activity the treatment...
Acid - washed, flux - calcinated diatomaceous earth is often used.通常使用酸洗的, 通量煅烧硅藻土.Diatomaceous earths are the skeletal remains of the tiny aquatic plants deposited centuries ago.硅藻土是百年前水生植物沉淀下来的遗骸.Add 20 mg. of diatomac...