求翻译：必须进行补习培训。至少，补习培训应该包括产品、色斑配置、操作及标准化、专门的操作程序、适用技巧、解释和评估NDT结果、安全、以及适用的法典、标准及规范。每个主题的教学深度由负责的3级人员确定。是什么意思？

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tutorial training must be carried out. At least, remedial training should include the product, BOTs configuration, operation and standardization, specialized operating procedures and applicable techniques, interpretation and assessment results NDT, security, as well as the application of codes, stan

Must carry on enrolls in supplementary lessons training.At least, enrolls in supplementary lessons training to be supposed to include the product, the color spot disposition, the operation and the standardization, the special operation sequence, the suitable skill, explained and appraises the NDT re

Tutorial training must be conducted. At least, tutor training should include product, pigmentation configuration standardization, special operations, operation and procedures, application techniques, interpretation and evaluation of NDT results, security, and application of codes, standards and spec

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