back support是什么意思 back support怎么读
back support的相关资料
backn.后面；背脊；靠背；后背；后卫vt.支持；后退adv.向后地adj.向后的；后面的；偏远的；过时的；积欠的
backlbown.后座
back support的用法和样例
- The fatigue fracture reason of the weld seam at the back supporting rod of the main reductor of an aircraft has been analyzed by fractography and metallographic test.
对某飞机主减速器后撑杆焊缝疲劳断裂原因作了分析。
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