求翻译：经过研究发现，起升机构以前用定量马达，但是随着起重机械的发展和要求的提高，现在越来越多的起重机液压马达用的是大转矩变量马达，这种马达的优点有许多好处，在论文中有详细的说明，从而不需要减速去这一环节，提高可传动的效率与可靠性。是什么意思？

After the study found that the hoisting mechanism using fixed displacement motor, but with the lifting machinery and the increasing demand for more and more used crane hydraulic motor is the motor of high torque variable, the advantages of this motor has many advantages in this thesis are described

After a study found that lifting bodies used in the past, but with quantitative motor crane and the increase, it is now increasingly used by crane hydraulic motor torque is variable motor, this motor has a number of benefits of benefits, and the papers are detailed in the instructions, so that they

After the research discovery, lifts the organization before with the quota motor, but along with the hoisting machinery development and the request enhancement, the more and more many hoist crane oil motor uses now is the big torque variable motor, this kind of motor merit has many advantage, has th

After a study found, before the lift mechanism with fixed displacement motor, but with the development of lifting appliances and requirements grow, now more and more of the crane is a high torque of hydraulic motor with variable motor, advantages of this motor has a number of benefits, detailed desc

正在翻译，请等待...