The NWCS "Triple Crown" chess tournament finishes this week. The winners from each catagory will receive trophies. For details of the tournament, please contact Mr. Ifay Zhang directly.
北威中文学校的棋艺比赛将继续举行﹐详细比赛细节请向棋艺课张一飞老师联络。 各组优胜者将得到奖杯。
2
The paper discusses the necessity of applying double stepped backup rolls, and describes the methods for calculating the contact length and stepped depth and work roll crown.
论述了采用双阶梯支承辊的必要性。 提出了接触长度、阶梯深度及工作辊凸度的计算方法。
3
The multitooth contact problem of the crown gear coupling is analysed by using 3 D BEM. Actual measurements on a specially designed test bed are made.