新款月饼成型机，比老款机速度更快、噪音小，用气量少，定位更准确，操作简单。
The newly mooncake shaping machine, it's faster than the old one, lower noise, more accurately in fixed position, easier in use.
变频功能型电动葫芦利用变频器使电源频率发生变化，实现电动葫芦起升机构和运行机构的变速，使电动葫芦运行更平稳、定位更准确。
Such hoists change the power frequency through transducer and the lifting speed and the traveling speed to make the electric hoist travel more smoothly and more accurately.
实验目的：本文目的基于进行下颈椎椎弓根的相关经线及角度测量，定位更准确的椎弓根进钉点、置钉方向，为成功应用经颈椎椎弓根螺钉技术提供必要信息。
Objective: to go to more exact point and direction during the screw fixation make sure to insert screw successfully by measuring the dimension of the lower cervical spine pedicle.
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