(1)、总排量为液压马达排量乘以减速传动比。

　　The total displacement is calculated by multiplying hydraulic motor displacement with reduction transmission ratio。

　　(2)、额定扭矩是在系统压力为16MPa或20MPa时，考虑传动效率后的实际输出扭矩。

　　Rated torque is the actual output torque taking transmisson efficiency into account when system pressure is 16MPA or 20MPA．

　　(3)、传动效率包括液压马达的机械效率和行星减速器机械效率。

　　Transmission efficiency includes the mechanical efficiency of hydraulic motor and the mechanical efficiency of planetary reducer．

　　TDDC3 1000CD3 1H表示该液压传动装置采用单级行星减速器传动，齿轮箱模数为3，总排量为1000ml/rev,输出轴采用螺纹联接，液压

　　马达配流器D31，额定压力等级为20MPa。

　　TDDC3 1000CD31H means the hydraulic transmission device adopts single-grade planetary reducer transmission with modulus of

　　gearbox being 3 and total displacement of 100ml/rev；the output shaft adopts screwed connection．Hydraulic motor distributor is D31and

　　the rated pressure grade is 20MPa．