It's also why, to extract a given quantity of metal, less material needs to be processed, which is the most environmentally destructive part of mining.
同样，提取同样数量的金属所需处理的物质相对较少。
Sets up and performs destructive and nondestructive tests on materials, parts or products to measure performance, life or material characteristics.
建立并进行破坏性及非破坏性的材料、零件、产品测试，从而计量其性能、寿命或材料特性。
The modern material productive forces have already produced a force destructive to both natural production and social life.
现代物质生产力中已经产生出一种对自然生产和社会生活具有破坏性的力量。
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