预生产 meaning in English

preproduction

Welding procedure qualification based on pre - production welding test
基于预生产焊接试验的工艺评定
Steel - forging stock and forgings - technical specifications - pre - production and production forgings
钢.锻坯和锻件.技术规范.第3部分:预生产和生产锻件
The r8 test car , a pre - production model , proved repeatedly in 200 miles that it was a winner
在200公里的连续测试中， r8的测试车，也就是预生产模型，表现优秀。
Aluminium and magnesium alloy ingots and castings - technical specification - pre - production and production castings
铝和镁合金铸锭和铸件.技术规范.预生产铸件和生产铸件
Specification and qualification of welding procedures for metallic materials - qualification based on pre - production welding test
金属材料的焊接程序规范和鉴定.基于预生产焊接试验的鉴定

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