提出了一种利用差拍法测量油水浓度的有效方法。
An efficient heterodyne frequency method to measure the concentration of oil and water mixture is proposed.
分析两种不同网球底线击球技术的握拍法、步法和引拍挥拍的运动轨迹，比较它们的技术特点及其生物力学特征。
Analyze the racket grasp style, footwork, and the course of lead and brandish of the two baseline drives respectively, and compare the techniques and bio-mechanical characteristics between.
分析两种不同网球底线击球技术的握拍法、步法和引拍挥拍的运动轨迹，比较它们的技术特点及其生物力学特征。
Analyze the racket grasp style, footwork, and the course of lead and brandish of the two baseline drives respectively, and compare the techniques and bio-mechanical characteristics between.
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