Such an arrangement is inconvenient to the future operation and maintenance.
这样布置，对今后操作和维修带来不便。
Because of the nonstandard network terminal device, this kind of system has many disadvantages such as high price, difficult maintenance and inconvenient updating.
这种系统由于采用的是非标准网络终端设备，其缺点是价格昂贵、维护困难、不便于产品的升级换代。
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