“absolute roof”的概念、定义、翻译、参考文献-科学参考

单词	absolute roof
释义	absolute roof [`ab·sǝ´lüt `rüf] ^{MINING ENGINEERING} The entire mass of strata overlying a subsurface point of reference.
随便看	stepped gear wheel stepped leader stepped screw stepped-wave static inverter stepper motor stepping stepping motor stepping reflex stepping relay stepping switch step pulley step-recovery diode step response step rocket step-servo motor step soldering step strobe marker step tablet step test steptoe step trench step-up transformer step voltage regulator step wedge stepwise reaction

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