文中阐述了仪器的工作原理、密度控制器、微波传感器、数字显示单元硬件与软件，并给出实验结果。

The working principle of the apparatus, its density controller, its microwave transducer, and the hardware and software of its digital display unit are described in detail.

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文中阐述了仪器的工作原理、密度控制器、微波传感器、数字显示单元硬件与软件，并给出实验结果。

The working principle of the apparatus, its density controller, its microwave transducer, and the hardware and software of its digital display unit are described in detail.

youdao