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differentially encoded coherent PSK差分编码相干PSKdifferential pulse width modulation差分脉宽调制differential X-ray absorptiometry示差X射线吸收法differential refractometer detector差示折光计检测器differential evolutionary algorithmDE算法differential ultrasonic velocimeter差示超声测速仪differential wave velocity analyser微分波速分析仪differential system with odd degree奇次系统differential thermal analysis curve差热分析曲线differential pressure control valve差压调节阀