It is very simply a hi-fi system - with turntable, amplifier, and speakers - cast in concrete.
这是非常简单的音响系统，转盘，放大器-和扬声器-一成不变的。
With increasing of the holding time at high temperature, wear rate decreasing of low C-hi cr cast iron became more obvious, and wear resistance increased.
随着高温保温时间的延长，低碳高铬铸铁的磨损率降低幅度较大，耐磨性能提高。
Therefore, a kind of mechanically fixed assemble guiding plate made of hi-Cr-Mo wear resistant cast iron was developed.
为此，研制了一种机械夹固式高铬钼抗磨铸铁组合导板。
The steel and semi-steel rollers with cast grooves decrease the expense of material. It may become a new method for manufacturing small sized Hi-alloy groovesd rollers.
种新的生产高合金孔型轧辊的方法或许会在小型轧辊上采用。
The steel and semi-steel rollers with cast grooves decrease the expense of material. It may become a new method for manufacturing small sized Hi-alloy groovesd rollers.
种新的生产高合金孔型轧辊的方法或许会在小型轧辊上采用。
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