单位位移算符
Unitary displacement operator
等位移线
contour of equal Displacement
地下管线位移
displacement of underground pipelines
迭代移位线性搜索法
Iterative-shifting linear searching
多余度线位移传感器
multi-redundancy lineal displacement sensor
防爆直线位移传感器
flameproof linear displacement transducer
光谱线位移
Wavelength shift of spectral lines
宏微线位移检测
Macro-micro linear error checking (MMLEC