The paper offers a reliable reference to the research of raw material analysis method.
为造纸原材料材性分析技术的改进提供了可靠地参考依据。
Adopt material analysis method, the article makes an analysis and study on various factors which influence and decide the speed, it introduced some short running speed training principles.
采用文献资料分析法，从多方面分析和研究影响和决定短跑速度素质的各因素，并指出了短跑速度训练的原则。
This paper illustrates the principle and experimental method of material analysis by backscattering.
本文阐明用背散射进行物质分析的原理和实验方法。
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