An estimated 600 000 persons die each year due to the acute or chronic consequences of hepatitis B.
估计每年有60万人死于急性或慢性乙型肝炎。
To improve the alignment degree of sintered Nd - Fe - B magnets on die pressing conditions, taking technologic measures such as in…
为提高在金属模压工艺条件下的取向度,应加大取向外磁场或者采取减小磁粉与模具之间摩擦力的措施。
On the basis of ZL201, B, Zr, V are added to melt to enhance the cast ability before die cast experiment.
在Zl201的基础上,调整合金成分,改善合金的铸造性能,进行压铸试验研究。
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