Analysis is made to the difference between the taker-in wire with chain-locked base and the conventional wire beset in the groove regarding the carding process and the application.
分析了链锁基部刺辊齿条和在沟槽中镶嵌的普通基部刺辊齿条在梳理工艺和使用上存在的差异,指出前者具有的优越性,是提高工艺效果、成纱质量的优选品种。
Chemical properties of stem flow in Chinese pine and sharp tooth oak forests as well as its effect on the characteristics of soil nearby the base of tree stems in the two forests were studied.
研究了锐齿栎、油松茎流化学性质及其树干基部土壤特性，结果表明：油松茎流的ｐＨ值为４。