与普通X80钢相比，双相x80钢的应变时效倾向较小。
Compares with traditional X80 steel, Duplex X80 steel exists less tendency of strain aging.
与普通的物理化学杀菌方法比较，抗菌塑料具有杀菌时效长、经济、方便等特点。
The antibacterial capacity of antibacterial plastic is longer, steadier, more economical and more convenient than plastics treated with physical and chemical antibacterial methods.
内容摘要：管道被堵塞需要疏通，如果是用普通的人工清理方法在遇污水或有毒管道时不但脏且是很危险的，而大面积泥土淤积时效率很低或根本无法疏通。
Brief: The pipe line is needed to dredge when it was blocked. It is very dirty and dangerous and lower efficiency or can not operate by manpower when the pipe line is waste or poisonous.
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