testing cover是什么意思 testing cover怎么读
testing cover的用法和样例
- Our services cover the mechanical, thermal, chemical compsition, flammability, weathering resistance testing, safety protection testing and chemical properties.
测试覆盖了材料的机械性能，热学性能，成分分析，耐候老化实验，安全可靠性测试和化学环保测试。
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