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- The outer materials and the edge of FTO produce the main scatter of the object.In order to reduce the scatter of the edge of FTO and BPC, a graded collimator is used in the radiographic system. 利用坡度准直器对系统散射严重的区域进行的降散射，表明坡度准直器是一个很好的降散射器件，能有效提高图像质量。
- Pupils who pass the test will be promoted to the next higher grade. 小学生只要考试及格就会升到高年级。
- He's not in the first grade as a musician. 他不是第一流的音乐家。
- A student who gets 90% is graded A. 凡得90分的学生列为甲等。
- Business is now on the up grade. 目前生意蒸蒸日上。
- The term papers have been graded. 期末考卷已评完分数了。
- graded collimator 成像性能
- Pupils with 90% or more are awarded Grade A. 满90分的学生评为甲等。
- The sixth grade saw an educational film yesterday. 六年级学生昨天看了一部教育片。
- He received a failing grade on the term paper. 他的期末报告不及格。
- Red and yellow grade into orange. 红与黄混合成橘黄。
- The twins will enter the fourth grade this fall. 这对双胞胎今年秋季将升到四年级。
- Their marriage is on the down grade. 他们的婚姻关系每况愈下。
- The trial flight has made the grade. 试飞成功。
- The naughty boy had to repeat the fifth grade. 这个顽皮的男孩不得不重读五年级。
- The Collimator projects a reticle to infinity. 准直仪将十字线投射到无穷远。
- He ranks among the best pupils of his grade. 他是他们班级最好的学生之一。
- The collimator lighting remains also switched on. 准直仪照明仍然保持开启。
- This was to become known as the AGLT collimator. 这是AGLT瞄准仪的显著特征。
- A person who has achieved this grade. 特等射手取得这种等级的人
