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S Korea, U. S. to hold joint drill after UN action.
韩美联合军演将在联合国安理会对朝措施出台后举行。
youdao
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Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
钻杆接头的各种纵向开裂属于低应力脆性断裂。
youdao
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Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
钻杆接头的各种纵向开裂属于低应力脆性断裂。
youdao