the test principles are re-written
...方法部分修改；the test methods of the friction properties; ——检验规则内容重新编写；the test principles are re-written; ——标志和包装修改；the packing and marking; ..
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the test principles are re-written
测试原则被重写
以上为机器翻译结果，长、整句建议使用 人工翻译 。