One type of pattern was of a specific density and was to be classified as dense, while the second type of pattern could vary in density, but was always less dense than the first one.
一种图案具有特定的密集度，被归为“密集”类，另一类图案的密集程度不同，但都比第一种的密集程度低。
The results show that the specific density of the composite can be increased and the gradient boundary layers can be eliminated by second compressing power metallurgy technique.
结果表明：采用复压烧结粉末冶金工艺可提高梯度复合材料的致密度，并能消除梯度层间界面；
The results show that the specific density of the composite can be increased and the gradient boundary layers can be eliminated by second compressing power metallurgy technique.
结果表明：采用复压烧结粉末冶金工艺可提高梯度复合材料的致密度，并能消除梯度层间界面；
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