nonfan

常見例句

Nonfan method is different from other traditional methods,which is a kind of methods with reliable technology,low cost and suitable for China.
無風(fēng)機(jī)方式有別于其他傳統(tǒng)的方式,是一種技術(shù)可靠、造價低、非常適合于我國廣大地區(qū)的井筒防凍方式。
Keywords pit shaft frostbite nonfan method air heating quantity of heat exhaustion;
井筒;防凍;無風(fēng)機(jī)方式;空氣加熱;耗熱量;