be present during chemical testing
Be present during electrical testing在现场视察电力试验 Be present during chemical testing在现场视察化学试验 Be present during hydrostatic testing在现场视察流体静力试验 ..
基于12个网页-相关网页
be present during chemical testing
在化学测试时在场
以上为机器翻译结果，长、整句建议使用 人工翻译 。