尽管本教程面向所有不同级别的UNIX专业技术人员，但如果您至少对UNIX文件系统有基本的了解，将会很有帮助。
Although this tutorial is written for all levels of UNIX expertise, it's helpful if you have at least a rudimentary understanding of the UNIX filesystem.
GG 5135型X射线安全检查设备的外壳板和部件只能被有资格的专业技术人员打开！
GG5135 X-ray security check equipment and components shell plate can only be a qualified professional and technical personnel to open!
SELEX Galileo公司已经有20位高级专业技术人员参与生产和测试微波激射器系统。
SELEX Galileo currently has 20 highly skilled technicians involved in the project, producing and testing the Maser systems.
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