“ball-and-socket head”的概念、定义、翻译、参考文献-科学参考

单词	ball-and-socket head
释义	ball-and-socket head 球窝节头
随便看	direct insert subroutine direct instruction direct interpolation direct ... into the orbit of direct investment direct investment flows direct inward dialing direction directional directional action directional aids directional amplitude modulation directional angel directional antenna directional baffle directional beacon directional beam directional blasting directional casting directional characteristic directional coil directional collector directional comparison microwave relay directional contactor directional control

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