Introduction　　English class in China now is still teacher-centre class， although teachers want to have a student-centre......

With big money invading pigeon-racing， hobbyists wonder about the future of their time-honored sport.　　Since the early ......

Ultra-precision machining is an effective approach to achieve high dimension accuracy and surface finish required in opt......

AIM: To establish an accurate and rapid stem-loop reverse transcriptional real-time PCR (RT-PCR) method to quantify huma......

导读：盲人Ben Underwood能运用自己超强的听觉来感知他周围的世界。研究发现，他的耳朵就像一台声纳机一样，能准确定位他想要的任何对......

With the rapid development of residential real estate market, risk evaluation has been an important task in the process ......

Language testing is a vital method in testing and teaching. It had been frequently used by foreign language teachers and......

采用装配装置进行工件的精密自动装配时会出现卡滞,这是一个较难解决的问题.尤其在狭长盲视空间中要求工件上的精密止口自动对接装......

本文提出了一种适用精密切割的数控车床设计方案。该方案采用机械触发式传感器，通过控制车刀运动来触发传感器，PLC把传感器得到的信......

Five samples of the indium material were examined for the isotopic abundance, and no variation was found. The isotopic r......