versatility and flexibility poor
Early in the automatic control system is to rely on relay - contactor to achieve, and its features are: simple, inexpensive, anti-interference ability, can achieve centralized control and remote control, but its fixed wire, versatility and flexibility poor;
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versatility and flexibility poor
通用性和灵活性差
以上为机器翻译结果，长、整句建议使用 人工翻译 。