air r variable capacitor 空气可变电容器
r-variable matching algorithm 可变r匹配算法
R Coronae Borealis variable 北冕座R型变星
Well, yes, we probably want to use part of a cylindrical coordinate, r except for, well, we don't want r because r doesn't change, it is not a variable here.
我们需要用到哪些坐标，我们也许会用一部分柱坐标，但有一个例外，即我们不需要,因为它不变，r在这里不是个变量。
The beam scan with variable linear polarization directions of antenna arrays using MM/C transmit-receive (T/R) modules is explored.
研究了由单片微波集成收发组件所构成天线阵的可变极化扫描问题。
Based on attribute identification theory, the comprehensive evaluation model of variable weight for quality of existing R. C. structures is established to evaluate the durability of the structures.
根据属性识别理论，建立了既有钢筋混凝土构件质量综合评判的变权模型，对既有钢筋混凝土构件进行耐久性评估。
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