Can be used in power transmission mesh, ratio of occasions, but generally higher accuracy of precision and installation accuracy.
啮合传动能够用于大功率的场合，传动比准确，但一般要求较高的制造精度和安装精度。
Using traditional plumb lines in elevator guide rails' installation is difficult to ensure the installation accuracy, wasting time and Labour.
电梯导轨安装精度以往多采用吊线锤法，一般很难保证导轨的安装精度，且费时、费力。
The invention has the beneficial effects of low construction risk, high efficiency, short construction period, high installation accuracy and low installation cost.
本发明的有益效果是：施工危险低、效率高、工期短、安装精度高、安装成本低。
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