differential via差分过孔differentialadj.差别的；特定的；微分的n.差别；工资差额；差动齿轮；[数]微分differential in-gel eleetrophoresis差异凝胶电泳differential bridge type spectrometer差示电桥式分光计Differential Speed Composite Spinning差速复合纺纱技术Differential geared wheel reductor or行星锥齿轮式轮边减速器differential flowmeter in gas service气体差压流量计differential conductometric titration差示电导滴定differential equation model of neuron神经元微分方程模型Differential polymerase chain reation差别PCRdifferential ultraviolet spectroscopy差示紫外分光光度法Differential Pseudo Range Positioning伪距差分定位