“fall block”的概念、定义、翻译、参考文献-科学参考

单词	fall block
释义	fall block [`fȯl ´bläk] ^{MECHANICAL ENGINEERING} A pulley block that rises and falls with the load on a lifting tackle.
随便看	parity error parity selection rules parity transformation parker Parker bound parkerite parkerizing Parker model Parker-Washburn boundary Parkes process parking apron parking brake parking lot parking orbit Parkinje effect parkinsonism Parkinson's disease parkland parkway Parmeliaceae Parnidae parogenetic paromomycin paronychia paronychium

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