The variation of composition and nature of every soil type humus vertical distribution is obvious.
各土类腐殖质组成性质垂直变化明显。
The variation of composition and binding ability of POC under these different treatments needs further study.
不同施肥处理下POC的结构性质及其稳定性的变化还有待于进一步的研究。
The effect of heat treatment on the various property of cemented carbide and variation of composition and structure of cobalt binder phase in the cemented carbide anvil have been studied.
研究了热处理对硬质合金各项性能的影响以及顶锤内部钴粘结相成分和结构的变化。
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