back-and-forth bending test ; backward and forward bending test ; ductilometer test ; alternating bend test ; alternating bending test
反复弯曲试验方法 Reverse bend test
金属反复弯曲试验 [材] reverse bend test of metal
反复弯曲应力试验 repeated bending stress test
反复弯曲疲劳试验机 reversed bending fatigue machine
反复弯曲疲劳试验 repeated bending fatigue test
反复弯曲冲击试验 repeatedtransverseimpacttest
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分析金属制品国标中反复弯曲试验及单向扭转试验方法的书写问题，并对此提出建议。
The article analyzes writing problem of experimental method for reverse bending and torsion in one direction test in national standard of steel wire products, and gives advice to this end.
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