经试验证明有用的的英文

• well-tried

• 经    warp
• 试验证明    evidence
• 有用    useful; serviceable
• 的    4次方是 The fourth power of 2 i ...
• 结构已经试验证明合格    for configurations qualified through testing; forconfigurationsqualifiedthroughtesting
• 试验证明书    approved test certificate; certificate of proof; test certificate
• 冲击试验证明    impact test certification
• 冲击试验证明书    certificate of impact test
• 飞行试验证明书    certificate of test; flight test certificate
• 品质试验证明书    certificate of quality test; certificateofqualitytest
• 压力试验证明书    certificate of pressure test; certificateofpressuretest
• 未经试用的    untried
• 定罪，证明有罪    conviction
• 证明有本事    prove one’s mettle
• 证明有多远    how distant
• 证明有理    have the merits; justification
• 证明有罪    conviction
• 有用的    available; favourable; helpful; practicable; practical; serviceable; subservient; usable; usefulness
• 试验检定证书 试验证明书    testingcertificate
• 久经试验的    time-tested
• 未经试验的    untested
• 验证, 证明    proofness
• 经过多次试验证明的    well-tried
• 经过反复试验证明的    well-tried
• 经过现场试验证明的    field-proven