By constantly improving and enhancing the company has initially formed a black metal casting professional small and medium scale production.
通过不断地完善和提高，公司已初步形成了以黑色金属中小铸件专业化、规模化生产。
Sand core for the blade was made by hand drawing the pattern from core box. The way of core making is feasible on a medium scale production.
采用线切割的方法制作涡轮叶片砂芯芯盒，用该芯盒手工起模制作叶片砂芯。
Although Wangping, a medium-scale mine with an annual production of 1.5 million tons, has not seen a severe accident in years, Wang says this does not mean no blood has been shed.
王坪矿只是一个年产150万吨煤的中等煤矿，而且近些年没看到过有重大事故的发生，但小王说这并不意味着没有人没流过一滴血。
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