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- Ball and beam system is a classical instable system whose mathematical model is constructed in this paper. 摘要球杆系统是一种经典的不稳定控制系统。
- This paper describes a new multi ion and electron beam system for preparing optic thin films. 本文介绍一种新型的光学薄膜制备用多离子束电子束系统。
- When high beam headlights are in use sensors in the Automatic High Beam system detects oncoming traffic and automatically switch the headlights to low-beam. 当远光灯大灯都在使用中的传感器自动检测系统的高光束迎面而来的流量和自动切换到低大灯光束。
- When these techniques are combined with a scanning focused beam system and a data acquisition system, abundance distribution of elemental composition can be displayed. 如果将粒子束聚焦;且装上扫描设备和计算机数据获取系统;可以得到样品中元素丰度分布的扫描图.
- Finally, the transient amplitudes of the beam system under the axial motion of piezoelectric actuator for three models are obtained by the finite difference method. 最后，由有限差分法得到各组暂态振幅的数值，并比较之。
- He singled and went to second on a passed ball. 他击出一垒打，再因对方漏接而跑上二垒。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- He swiped at the ball and missed it. 他向球猛击，但未打中。
- The ball hit the wall and bounced off it. 球打在墙上又反弹回来。
- The two laser beam system has been used to measure the relative density of linen dust, with the feature of wide measurement range,good sensitivity and restraining the intensity fluctuation noise. 本文采用双光路激光系统，对亚麻尘的相对浓度进行了连续测量，具有测量范围宽、灵敏度好、抑制激光强度起伏噪声等特点。
- He fumbled the ball and then dropped it. 他笨手笨脚的漏接了球。
- I throw a ball to her and she catch it. 我把球扔给她，她接住了。
- I threw a ball to her and she caught it. 我把球扔给她，她接住了。
- I hit him fair and square on the jaw. 我不偏不倚打中他的下巴。
- It is a fact of life and you must face it. 这是严酷的现实，你必须面对它。
- She and I can't live under the same roof. 她和我不能住在一起。
- The axisymmetric problems, bar and beam systems as well as space systems FEM are introduced by combining with engineering applications. 并结合工程应用介绍轴对称问题、杆梁系统、空间结构有限元法等。
- She had to scrimp and save to pay for her holiday. 她不得不为付假期的费用而苦苦攒钱。
- I'll try and rustle you up something to eat. 我设法给你弄点吃的。
- Switching Control for Ball and Beam System 球杆系统的切换控制
