two-port device的用法和樣例：
例句
- Selecting the opportune substrate's resistivity during the designing and manufacture of the device is very important.
合理選用矽片單晶材料的電阻率，對器件工藝設計和製造起到了關鍵作用。 - On the basis of predefined waveguide parameters, we use the finite difference beam propagation method to analyze the effect of the parameters on the device.
最後根據所確定的器件結構參數，用有限差分光束傳輸法分析了器件結構參數對器件性能的影響。
