求翻译：大型正铲液压挖掘机的工作装置是由回转机构、动臂、斗杆、铲斗等多个构件组成的串联开链机构，具有操作方便、运动灵活等优点，得到越来越广泛的应用[1]。但实物样机动辄上千万的成本使得大型正铲液压挖掘机的研发极具风险，困难重重，因此，目前采用对挖掘机的工作装置进行虚拟样机研究，能降低开发风险，是大型液压挖掘机研发的首选[2]。是什么意思？

The large shovel hydraulic excavator working device by the rotary mechanism, composed of multiple components of the boom, dipper stick, bucket series open-chain mechanism, with convenient operation, flexible movement, be more and more widely used [ 1]. Makes the cost of the physical prototype of the

Large hydraulic excavator bucket is the work unit is the swivel mechanism, and boom, arm, bucket, multiple components such as the series on link agency and has easy to operate, flexible movement, is becoming more and more widely applied [ 1]. But the physical prototype of 10 million costs make larg

The large-scale shovel hydraulic pressure excavator work installment is by the rotation organization, moves the series chain organization which the arm, the bucket arm, the scoop and so on many components are composed, has the ease of operation, the movement nimbly and so on the merits, obtains more

Large shovel hydraulic excavator working device is consists of a rotating mechanism, boom, arm, bucket made up of multiple components, such as the series opening mechanism, has advantages of convenience, sports a flexible operation, gaining a wide range of applications [1]. But physical prototype co

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