“drill jumbo”的概念、定义、翻译、参考文献-科学参考

单词	drill jumbo
释义	drill jumbo [`dril ´jǝm·bō] ^{MINING ENGINEERING} A mobile carriage or platform fitted with mechanical arms upon which several drilling machines are mounted.
随便看	push-push amplifier push-ridge moraine push rod push-to-talk circuit push-up push-up list push welding pustule Pustulosa pusule put putlog putrefaction putty putty knife putty oil puy pv PVA PVAc PVC PVDC PVI PVM PVP

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