基本解释[机械工程]试验焊接英汉例句双语例句Both experimental results and trial production demonstrated it operates reliably and smoothly, with high level of weld seam tracking precision.焊接实验和试生产结果证明，样机运行平稳、可靠，具有很好的跟踪精度。trial weld更多例句专业释义机械工程试验焊接