4.3.1 断路器的选择及校验的翻译：4.3 selection of all kinds of electrical equipment and calibration 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

4.3.1 Selection and verification of circuit breaker

4.3 selection of all kinds of electrical equipment and calibration

4.3.1 circuit breaker choices and verification

4.3 .1a select circuit breakers and verify

4.3 selection of all kinds of electrical equipment and calibration