无须专业维护
No professional maintenance required
以上为机器翻译结果，长、整句建议使用 人工翻译 。
“应用服务”导向和“无缝”升级，使客户无须配备专业的IT技术人员，更不必担心系统的升级和维护。
"Application of service" orientation and "seamless" upgrade so that the customers need not equipped with professional it staff, not to worry about system upgrades and maintenance.
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应用推荐
模块上移
模块下移
不移动