dosing device meaning in English

定量装置
配料设备
配料设施
配料装置

Through application investigation of dosing subsystem and utilizing principle of fluid mechanics ( bernoulli equation ) , quantitative dosing device was produced to measure chemical dosage , so as to settle the problem that metering pumps and electromagnetic flow meters widely used in water plants now have a very high requirement in technique and a very high cos t in maintenance . this device is easy to control , simple in maintenance and low in cost ; functionally it can substitute for metering pumps and electromagnetic flow meters used in system
通过对投加子系统的应用研究，针对目前在水厂普遍使用的投加计量泵、电磁流量计技术要求和维护维修成本高等问题，运用流体力学(伯努利方程)的原理制作定量投液装置对药液加量进行投加计量；该装置易于控制，维护维修简单、成本低廉，功能上能取代系统中使用的计量泵和电磁流量计。