此模型不仅提供保留计算机系统的有效方式，而且还提供了维护每个用户和计算机系统的历史记录的功能。
This model not only provides an effective means of reserving computer systems, but the model also provides the ability to maintain a checkout history for each user and computer system.
ITA说这一应用的B2B版本可以被整合进现在的手机和预订系统，iTunes上供消费者下载的版本将只保留搜索功能。
ITA says the B2B version of the app can be integrated into existing mobile and booking systems while the consumer-facing version on iTunes will remain search-only.
针对普通立式车床的不足之处，在保留右刀架机械结构和操作功能不变的基础上对C5225立式车床的左刀架进给系统进行了数控化改造。
According to the shortage of C5225 vertical lathe, numerical control alteration on feed system of C5225 vertical lathe was done in the base of keeping the mechanism structure and handling function.
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