The invention can prevent and treat viral hepatitis c.
本发明能预防和治疗丙型病毒性肝炎。
C. The invention can resist corrosion and high temperature with wider working temperature and less creep deformation without plastic deformation after working long time.
耐腐蚀、耐高温,工作温度范围宽、蠕变小,长期工作无塑性变形。
The invention can realize the nondestructive copy, extend the operating life of the master C. D. and selecting the large numerical aperture to meet the requirement for copying C. D. with high density.
本发明可以实现无损复制,提高母盘的使用寿命,选用大的数值孔径,满足高密度光盘复制的需要。
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