电气强度测试可分为破坏性和非破坏性。
The dielectric strength test can be made to be destructive or non-destructive.
用户首先必须选择具有破坏性和非破坏性的方法。
Users must first choose between destructive and nondestructive methods.
不同的聚合物技术已经进化为痕量金属分析。一般来说，技术面临两大标题：破坏性技术和非破坏性技术。
Different techniques have evolved for trace-metal analysis of polymers. In general, techniques come under two broad headings: destructive techniques and non-destructive techniques.
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