Described are the function principles of the spring parking devices in tread braking units produced in our country and in Germany.
对我国及德国生产的踏面制动单元弹簧停车制动器的作用原理进行了介绍。
The basic idea on the design of the automatic switcher for time comparison is clarified. And its function principles and some particular circuits are introduced.
本文说明了研制这一设备的一些基本思路，介绍了工作原理和主要的特殊电路。
Via analysis on the structure and function principles of the 120 emergency valve, the cause to bad performance of the 120 emergency valve are found out, and method for solution is given out.
通过对120紧急阀结构及作用原理的分析，找出了120紧急阀性能不良的原因，并提出了解决办法。
Function principles: The product can enhance proliferation and division of cells, improve rough skin, dark and gloomy, pale yellow skin.
功效原理：促进细胞增殖分化，改善皮肤粗糙、晦暗哑黄等状态。
Function principles: The product can enhance proliferation and division of skin cells, improve rough skin, dark and gloomy, pale yellow skin.
功效原理：促进细胞增殖分化，改善皮肤粗糙、晦暗哑黄等状态。
Grid technology was introduced for development of digital forestry support platform in this paper. The function, principles and model of grid application were discussed.
论述网格技术应用在建设数字林业平台支撑环境过程中的作用、原理和结构。
Grid technology was introduced for development of digital forestry support platform in this paper. The function, principles and model of grid application were discussed.
论述网格技术应用在建设数字林业平台支撑环境过程中的作用、原理和结构。
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