大尺寸井眼就需要双泵。
什么情况下使用双泵呢？
可配多个灌装头，常用的型号有：单泵机、双泵机和四泵机。
Responding to more filling, can match in sizes: single pump, double pump and four pump.
采用双泵合流全液压转向系统，操作轻便、灵活，性能稳定可靠。
6 double pump confluence full hydraulic steering system, easy operation, flexible, stable and reliable performance.
双螺杆泵为一种双吸式非密闭的双螺杆泵。
Double screw pump is a kind of double suction not airtight double screw pump.
在石化行业中使用大型双驱动熔体泵已成为一种趋势。
Using large double drive melt pumps in petrochemical industry has become a trend.
分析了双头双螺杆泵密封腔的密封原理。
气体管道增压泵有单作用泵和双作用泵。
Gas pipelines have a single role of booster pumps and pump dual role.
双作用式变量叶片泵是一种新型变量泵。
The double-acting variable-vane pump is a new type of variable pump.
叶片泵：分为双效果叶片泵和单效果叶片泵。
Vane pump: vane pump into double effect and single effect vane pump.
而双作用式泥浆泵每往复一次完成两次吸排水行动。
The double acting reciprocating mud pump one time every two suction drainage action.
一种新型双支承结构叶片泵。
The utility model relates to a double support structure vane pump.
外啮合双齿轮泵的结构。
目前使用广泛的双作用叶片泵存在着较大的能量浪费；
The double action vane pump using extensively at present has great energy waste;
LS型双出口消防泵即设置两个出水口的DL型泵。
Model LS double-outlet fire pump is the Model DL pump equipped with two water-outlets.
CBGJ高压齿轮泵单。双两个系列。
CBGJ高压齿轮泵单。双两个系列。
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