nonfan

常见例句

• Nonfan method is different from other traditional methods,which is a kind of methods with reliable technology,low cost and suitable for China.
  无风机方式有别于其他传统的方式,是一种技术可靠、造价低、非常适合于我国广大地区的井筒防冻方式。
• Keywords pit shaft frostbite nonfan method air heating quantity of heat exhaustion;
  井筒;防冻;无风机方式;空气加热;耗热量;
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