已经执行的双写操作的数量。
The number of double write operations that have been performed.
双写操作执行的页的数量。
The number of pages that have been written for double write operations.
双梯形螺纹使得操作更加快速。
油门双控制机构，行走与作业操作更方便。
With accelerator dual control bodies, the running and operation are more convenient.
双定位装置操作方便。
简化操作与双联控制转阀结构。
Simplified operation and the construction of the dual - function rotary valve.
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.
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.
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