Areas of necrosis and cavitation may occur within the tumor.肿瘤内可以有坏死和成腔区.Cavitation can be caused by a variety of reasons.气穴可以由各种原因引起.The total diameter of cavitation, if present, is less than 4 cm.若出现空洞, 其直径总和小于4厘米....
The main reason is that cavitation erosion occurred in pervasion pipe of lubricator.经检查发现,主要原因是注油器扩散管汽蚀,以致注油器工作不正常,润滑油压偏低.The total diameter of cavitation, if present, is less than 4 cm.若出现空洞, 其直径总和小于4厘米.Areas of necrosi...
缔和聚合物较 非 缔合聚合物而言是一种比较好的酸液稠化剂.Association polymer than the non - associated polymer is a relatively good acid viscosifier.通过对稠化剂和抗磨添加剂的筛选,研究以水为分散介质的润滑脂.Lubricating greases with water as dispersing media are studied by scr...