It is only the wind shaking the house, rattling the Windows, banging a piece of iron on the roof and making her bed tremble.
只不过是风声萧萧，屋动窗摇，铁片碰撞房顶的咣当声和床铺簌簌作响的颤抖声。
The sponge iron making with iron sludge produced during DSD acid-making can be used for not only general metallurgy but also iron-carbon bed to treat DSD acid oxidation wastewater.
利用DSD酸生产过程产生的铁泥，研制出既能用作常规冶金原料，又能用于处理DSD酸氧化废水的水处理用海绵铁。
Tempering of the machine bed is carried out twice to ensure stability. The tempering process changes the internal structure of the iron making it more durable and rigid.
机床整体床身重，同时床身制造过程中采用二次淬火工艺，从而改变了铁的内部结构，使之更加耐冲压，刚性上有显著提高。
Tempering of the machine bed is carried out twice to ensure stability. The tempering process changes the internal structure of the iron making it more durable and rigid.
机床整体床身重，同时床身制造过程中采用二次淬火工艺，从而改变了铁的内部结构，使之更加耐冲压，刚性上有显著提高。
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