Ring Indicate. An RS232 input line that is generally held high by a modem while the telephone is ringing.

振铃提醒，某个RS232输入，通常在电话振铃的时候拥有较高的响应。

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If input sigmal is supwrimpsed with high-frequency noise use a low-pass filter in the input signal line.

若输入信号伴随高频干扰，应在线里用高频过滤器。

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Experimental results show that three-phase PWM converters are advantageous in high power factor, small input-line current harmonic distortion and bi-directional power flow.

实验表明，作为双馈感应发电机转子励磁电源的三相pwm变换器具有功率因数高、网侧电流谐波小、能量双向流等优点。

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Fashion items for the retail shops in the UK. Now I though that all of that was done in China, India, Bangladesh and so on, as sewing garments really is a high labourt input production line.

FORBES: Reshoring, Onshoring: the Opposite of Offshoring Anyway