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- It is hard to modify or control the shape of model sand by common ways of comminution. 通常的粉碎方法时塑料模型沙不规则颗粒形貌的控制和改善是十分困难的。
- Even the chemical synthesis model sand can not satisfy the need of silt dynamics research in different similar scale for the expensive self-cost and unchangeable density. 而采用合成的树脂颗粒作为模型沙，成本较高，且过于圆滑，亦不能根据相似比尺的要求调整其密度，给泥沙动力学研究造成不便。
- The shape of model sand particle play an important role in submarine rest angle, starting speed, bulk specific weight and some other physical characters. 摘要颗粒形貌对模型沙的水下休止角，起动流速、堆积密度等性能有显著影响。
- Keywords model sand;agglomeration;disperse;rest angle; 模型沙;凝聚;分散;休止角;
- Standing by him was a model worker. 站在他旁的是一位劳动模范。
- Diana is modeling for a fashion show. 戴安娜正在时装表演会上当模特。
- I think I can get that special model for you. 我想我可以为你找到那种特别的型号。
- She has been held up as a model worker. 她被推举为模范工作者。
- He showed us a model of the new office building. 他给我们看了新办公楼的模型。
- He taught Tom how to make a model airplane. 他教汤姆作模型飞机的方法。
- John is repairing his model plane at his leisure. 约翰不慌不忙地修理着他的航模。
- The old sailor chipped out a tiny model boat. 那名老水手一点儿一点儿地削出一个小船模型。
- The luxury model gives a smoother ride. 坐这种豪华型汽车感觉很平稳。
- That beautiful girl is a fashion model. 那位漂亮的女孩是一位时装模特儿。
- The new model delivers speed and fuel economy. 这种新型设计能提高速度、 节约燃料。
- He assembled the model aircraft bit by bit. 他一块一块地装配飞机模型。
- He traded in his car for a new model. 他把旧汽车折价添钱买了辆新型号的。
- This model scrolls far too slowly. 这种型号的计算机文本上下移动得实在太慢。
- The model plane got out of control and crashed. 模型飞机失控坠落下来。
- This washing machine is the latest model. 这种洗衣机是最新型产品。
