By means of crushing and conditioning the size ratio, fettle material and mud powder to plug tap-hole for electric refining furnace use were developed.
通过加工破碎，调整粒度及配比等工艺参数，研制开发出铁合金精炼炉补炉料及堵眼粉。
He put the plug in the sink and turned on the tap.
他用塞子堵住水池，接着拧开水龙头。
He put the plug in the sink and turned on the tap.
他用塞子堵住水池，接着拧开水龙头。
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