Through the comparison of the principle of two kinds of control systems ,flow-method liquid mixture and liquid level mixture ,the advantages and disadvantages of the two methods of spray machine were obtained and it will provide the basis for the selection of appropriate liquid-mixed methods in agricultural production .%通过对流量法药液混合与液位法药液混合两种控制系统的原理对比,总结出施药机两种混合方法的优缺点,为农业生产中选择合适的药液混合方法提供了依据。
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