卧式真空炉计算机自动控温研制 - 电测仪器网 关键词： DCS系统；PID控制；噪声屏蔽；比较及配比运算 [gap=566]Keywords: DCS system;PID control;Noise shielding;Compare and matching operation
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In addition, the engines are located on the aft upper surface, providing natural noise shielding that makes the configuration quieter during takeoff and landing.
此外，发动机位于后部上表面，提供了自然的噪声屏蔽，使得配置在起飞和着陆期间更安静。
It would also need good shielding and special electronics to filter the DSSS signal from the radio-noise created by the Earth, the sun and the rest of the galaxy.
同时还需要良好的外层保护和特殊电子器件，从地球、太阳及其太空中传来的无线电“杂音”中过滤出dsss信号。
Shielding is required because high impedance circuitry is susceptible to pickup of spurious radiated noise.
由于高阻电路容易拾取杂散的辐射噪声，所以需要采取屏蔽措施。
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