经等密度梯度离心分离，从褐煤、长焰煤、气煤和贫煤四种不同变质程度煤中获得了高纯度的有机显微组分。
Coal maceral concentrates of high purity were prepared from four different rank coals by Density Gradient Centrifugation method.
采用稀土变质及激光熔覆工艺在20号钢基体上获得了钴基自熔合金梯度组织涂层。
A method was approached about making a gradient coating of self-melt Co-based alloy on 20 steel substrate with rare earth(RE) by laser cladding.
热接触变质围岩内应变强度和压缩率向岩基接触面方向递增，存在较明显的应变强度梯度和压缩率梯度。
There clearly exists a strain intensity gradient and compression rate gradient within the country rocks so that both strain intensity and compression rate increase toward the contact surface.
热接触变质围岩内应变强度和压缩率向岩基接触面方向递增，存在较明显的应变强度梯度和压缩率梯度。
There clearly exists a strain intensity gradient and compression rate gradient within the country rocks so that both strain intensity and compression rate increase toward the contact surface.
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