恒定磁场产生器，位于该磁性扫描器的近端处，在该射束路径之中产生磁场，用于减轻零磁场效应；
A set of entrance magnets are positioned about an entrance of the scanner and generate a constant entrance magnetic field across the path of the ion beam.
因为资源束从类路径装入，所以代码并不依赖于能够读取JVM命令行参数的能力。
Because resource bundles are loaded from the classpath, the code isn't dependent on being able to read the JVM's command-line parameters.
利用加速器治疗肿瘤时，通常要在射线束的路径上加入楔形板以改变平野的剂量分布。
When an accelerator is used to treat tumour of illness, the distribution of doses is changed by commonly inserting a wedge into the path of radial beam.
利用加速器治疗肿瘤时，通常要在射线束的路径上加入楔形板以改变平野的剂量分布。
When an accelerator is used to treat tumour of illness, the distribution of doses is changed by commonly inserting a wedge into the path of radial beam.
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