recrnn.改造(休养)RECabbr.录制（=record)rectilinear accelerator直线加速器reciprocating impedance倒易阻抗,共轭阻抗reclining radio antenna折倒天线recombination deficient重组缺失Reconstitution in vitro体外重组recycling cloud chamber再循环云室reciprocator compressor往复压缩机Recognitio nil dat novi承认并不产生新事物Reconfigurable operator重构操作rectifier transformator整流变压器