Welding techniques shall be selected to ensure that specified tolerances for straightness and out-of-roundness are not exceeded.
选用焊接技巧应保证不超出指定的直线度和圆度允差。
Welding techniques shall be selected to ensure that specified tolerances for straightness and out-of-roundness are not exceeded.
选用焊接技巧应保证不超出指定的直线度和圆度允差。
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