This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.
本文介绍一种测量石油螺纹量规的螺旋线、中径、锥度和牙形半角的新方法及装置。
For getting superior quality and denser WDM device, a new method to make demultiplexing device with volume holographic technology is studied.
为了寻求更高质量和密集度的WD M器件，对体全息技术制作WD M器件的新方法进行了研究。
Mobile payment. Which was implemented by mobile device with wireless method, is a new payment way, which was result of wireless communication and wireless Internet and people 's demands.
移动支付是使用移动设备通过无线方式完成支付行为的一种新型的支付方式，它是无线通信技术与无线互联网技术以及人们需求应用的产物。
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