1. The balance mechanism of the walking-beam with downward beam balance technique and its loading characteristics of the structure are analyzed in the paper. 分析了游梁下偏平衡技术的平衡机理和结构受力特点，介绍了运用该技术对常规游梁式抽油机进行节能改造的生产实践。
2. Using axicon-based optical devices can realize such transformations as Gauss' beam into a diffraction-free Bessel beam, solid beam and annular beam converting each other. 应用旋转棱镜和组合光学系统能够将高斯光束变换成“无衍射”贝塞尔光束，并能实现实心和环状光束的相互变换。
3. This paper, by using analysable method of static balance, presents the calculated balance position and balance mass of large bell for blast furnace, so as to improve installational speed and quality. 文章采用静平衡分析的方法，给出了高炉大钟的平衡位置和平衡质量的计算方法，可以有效提高大钟的安装速度和质量。
4. The behavior of the dynamic balance of EQ141 crankshafts (with balance weights) is studied through dynamic balance test , and comparison is made with EQ140 crankshafts. 本文通过动平衡实验，对EQ141有平衡块曲轴的动平衡性能进行了研究，并与EQ140曲轴进行对比。
5. This small balance consists of the balance and a pan. The balance arm is made of bone and the pan and weight are made of copper. 这种小秤是由秤和秤盒组成，秤杆为骨质，秤盘和秤铊都是铜制。
