Aeration system comprises one circle concrete tank which equipped with one ( 1 ) set of submerged aeration header , one ( 1 ) set of re - circulation pumps and air blowers 深水射流曝气系统为一圆形曝气池，有一组射流曝气头，一个循环水泵。
Specification for safety of household and similar electrical appliances - particular requirements for stationary circulation pumps for heating and service water installations 家用和类似用途电器的安全.加热和供水设施用固定式循环泵的特殊要求
Household and similar electrical appliances - safety - part 2 - 51 : particular requirements for stationary circulation pumps for heating and service water installations 家用和类似用途电器.安全.第2 - 51部分:加热和供水设施用固定式循环泵的特殊要求
Household and similar electrical appliances - safety - part 2 - 51 : particular requirements for stationary circulation pumps for heating and service water installations 家用和类似用途电器.安全.第2 - 51部分:加热和供水设施用固定式循环泵的特殊要求
If a balancing valve is located downstream from a circulation pump , allow a distance of ten ( 10 ) diameters between the pump and balancing valves ( as illustrated below ) 如果平衡阀位于循环泵下游的位置，则泵与平衡阀之间的距离应该是十倍的直径（如图所示） 。
Pump , rotodynamic pumps - circulation pumps having an electrical effect not exeeding 200 w for heating installations and domestic hot water installations - requirements , testing , marking ; german version en 1151 : 1999 泵,离心泵.供暖设备和家用热水设备的电气功效不超过2
Pumps - rotodynamic pumps - circulation pumps having an electrical effect not exceeding 200 w for heating installations and domestic hot water installations - requirements , testing , marking 泵.旋转动力泵.加热装置和家用热水装置用电效应不足200w的循环泵.要求试验和标记
Pumps - rotodynamic pumps - circulation pumps having a rated power input not exceeding 200 w for heating installations and domestic hot water installations - non - automatic circulation pumps , requirements , testing , marking 泵.旋转动力泵.家用热水置装和供热装置用的额定功率输入不超过200w的循环泵.非自动循环泵的要求试验和标记
The total system consists of a storage silo with buffer hopper , a lime dosing screw , a lime milk slaking tank , a lime milk holding tank , two lime milk circulation pumps and a circulation line 整个系统包括一个带有缓冲料斗的贮存筒仓、一个石灰计量螺旋输送机、一个石灰乳熟化槽、一个石灰乳贮槽、两个石灰乳循环泵和一个循环四路。
Pumps - rotodynamic pumps - circulation pumps having a rated power input not exceeding 200 w for heating installations and domestic hot water installations - noise test code vibro - acoustics for measuring structure and fluid - borne noise 泵.旋转动力泵.家用热水置装和供热装置用的额定功率输入不超过200w的循环泵.测量结构和流体导声的噪音试验编码声振捣
