从外观上看橡胶件表面疏松、毛糙，失去弹性，从而使橡胶失效。
Rubber pieces from the exterior surface of osteoporosis, loss of flexibility, so that failure of rubber.
铸造技术不完善、铜合金原料中的杂质致使水龙头零件表面疏松，并有大量砂眼。
The defects of casting technology and the impurities in copper alloy material cause roughness of faucet surface with large amounts of sand holes.
在显微镜之下，原本看起来很干净的表面其实像砖墙一样凹凸不平，如果这堵墙看起来破烂不堪或疏松易碎，就说明珍珠层没有用。
Under the microscope, the stuff they're after looks like a clean, structurally sound brick wall. If the wall looks ratty or crumbly, it's no good.
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