用SEM观察到玻璃纤维的表面光滑、低析晶、断口质密度高、断口贝纹呈明显沟状。
It is observed by SEM that glass fiber has smooth surface, low crystallization, high density of fracture and shellfish veins of fracture obviously submits ditch form.
能使成球辊成形出的铜球整体圆整度好，表面光滑无突，致密度优异并且成球效率高，以及在成球过程中没有材料损耗。
The ball forming process has high efficiency and no material loss, and the formed ball has high sphericity, smooth surface and high density.
银圆状，粒径细，高密度，平行线定向，鲜艳清晰，表面光滑，金属感强，白而闪亮。
"Silver dollars", thin particle size, high density, parallel directional, bright color, slippery surface, strong metallic impression, white and blink.
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