本文深入分析了机械能守恒定律的物理内涵，利用具体事例讨论并纠正了对该定律的两种常见错误认识，并指出了教学中应注意的问题。
This paper deeply analyzes the physical connotation of the Law of Conservation of Mechanical Energy, and points out the attention-worthy matters in the teaching process.
对工程机械生产厂家以及其他液压机械的生产厂家的密封的设计和选用具有指导意义。
These have instructive meaning of designing and selecting seals for construction machinery and other hydraulic machinery manufacturers.
为此，探讨新技术与新设备在煤矿企业大型综合机械化采掘设备中的应用具有重要的意义。
So exploring new technology and new equipment in coal mine enterprises large-scale comprehensive mechanization of mining equipment has the very vital significance.
因而，计算机视觉检测技术在机械制造企业的产品质量检测和加工过程检测中的广泛应用具有十分重要的意义。
So the computer vision test technology has very important use in test of product's quality and of manufacture process of manufacturing industry.
建议盒饭生产单位提高机械化操作程度，采用容易清洗、消毒的工用具、容器及饭盒，或一次性饭盒。
It is suggested that production unit should increase the automation in manipulation, adopt the tools, boxes and containers which are cleaned and sterilized easily, or one-shot boxes.
用于抓取和倾倒铸铁用具的机械手臂。
Manipulator with gripper tooling for picking and tipping casting cores.
用于抓取和倾倒铸铁用具的机械手臂。
Manipulator with gripper tooling for picking and tipping casting cores.
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