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- With one S1 pedicle screw fixation,the average stiffness was 203N/mm for compression,147N/mm for tension,and 2Nm/deg. for torsion. With two screw fixation,the average stiffnesses increased to 255N/mm(126%),185N/mm(126%) and 2 4Nm/deg. 结果 :单钉固定的压缩、拉伸和扭转刚度分别为 2 0 3N/mm、1 4 7N/mm和 2 0Nm/deg ,双钉分别为 2 5 5N/mm、1 85N/mm和 2 4Nm/deg ,两者刚度的差异均有显著性。
- The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
- The thought of my exams next week scares me stiff. 我一想到下星期要考试就很紧张。
- The average output of the factory is 20 cars a day. 该工厂的平均产量是每天20辆汽车。
- The soldier stood stiff as a ramrod. 这士兵站得笔直。
- His income is well below the average. 他的收入大大低于平均水平。
- We fail one student per year on average. 我们平均每年有一个学生不及格。
- An extremely stiff, erect posture. 过分笔直，僵立的姿态
- The stiff stalk of various grasses. 梗草各种草的硬花梗
- Meals average out at 5 per head. 膳食平均每人5英镑。
- She cleaned the sink with a stiff brush. 她用硬毛刷清洗水槽。
- On average we receive five letters each day. 我们平均每天收到五封信。
- She sat there as stiff as a ramrod. 她笔直地端坐在那儿。
- Each household sold, on the average, two pigs. 平均每户交售了两口生猪。
- She sat there stiff as a ramrod. 她笔直地端坐在那儿。
- Our reps make on average six calls day. 我们的销售代表平均每天打六次电话。
- He was sitting upright, as stiff as a poker. 他正襟危坐,纹丝不动。
- His work at school is below the average. 他的学业成绩在一般水平以下。
- Stir the flour and milk to a stiff paste. 把面粉和牛奶搅成很稠的糊。
- The readings we took were well above average. 我们记录的读数远远高於平均数。
