The mechanics problems caused by the four major effects of nanomaterials were studied.
分析了纳米材料的四大效应所带来的力学问题。
Thirdly, it studies the major existing problems from four aspects: technological service, prevention service, material supply service and management service.
从技术服务、防治服务、物质供应服务和管理服务四个方面研究了存在的主要问题。
Thirdly, it studies the major existing problems from four aspects: technological service, prevention service, material supply service and management service.
从技术服务、防治服务、物质供应服务和管理服务四个方面研究了存在的主要问题。
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