This model rationally lays down the measurement tolerance in each process, on the basis of deviation statistics theory and deviation transmission idea and in accordance with the impact of technological capacity and processing deviation in intermediary process on the processing deviation in the ultimate process.
该模型以误差统计和误差传递思想为基础,根据各工序的工艺能力及中间工序加工误差对最终工序加工误差影响的大小,来合理制定各工序尺寸公差。
Before such correction, the dose deviation caused by the target positional error may exceed the clinical tolerance. In order to guarantee the accuracy of dose delivery, IMRT treatment quality should be assured based on on-board image guidance.
未经修正时靶区位移误差导致的剂量分布误差可能超出临床允许范围,调强放疗应以在线图像引导验证基础上进行才能保证剂量分布精度。
Relative deviation of controlled variable relative tolerance between forward and backward in indicating value
控制变量的相对偏差示值进回程相对误差
permissible deviation in dimensions without tolerance indication for gas cut steel plates
气切削加工钢板基本公差
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