实验研究对于其它铸造工艺条件下二次非金属买物的控制亦有一定的参考价值。
This experiment also has reference value to the control of secondary inclusion in other casting process conditions.
优先采用砂型铸造,主要原因是砂型铸造较之其它铸造方法成本低、生产工艺简单、生产周期短。
Give priority to the mold casting, the main reason is the casting mould casting method than other low cost, simple production technology, production cycle is short.
它们除了是“钱”以外没有任何其它意义:仅2008年一年纳税人为此支付的成本费用就达到8亿4800万美元,其中超过2/3的花费用于铸造硬币上,铸币生产过程中要消耗14823吨的锌、23879吨的铜、2514吨的镍。
And that ain't money for nothing: The cost to taxpayers in 2008 alone was $848 million, more than two-thirds of which was spent minting coins that many people regard as a nuisance.
There were people goldsmiths were people who worked in the metal gold and made beautiful things for people jewelry and other things.
有人,比如金匠就是是,铸造金的形状,并且为人民铸造美丽的东西的一群人,包括珠宝和一些其它的东西。
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