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)方式有別於其他傳統(tǒng)的方式,是一種技術(shù)可靠、造價(jià)低、非常適郃於我國(guó)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;
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