在其他的一些试验中规则被稍作改动，以便于验证一些其他理论。
The rules were changed slightly in different trials so that it was possible to test a number of theories.
因为不用改动操作系统，实现容易，便于推广。
Because it needn' t modefy the operating system, this method can be easy realized and spread.
该系统具有结构简单，对原机改动小，便于安装，成本低等优点。
It has many advantages such as its simple structure, less modification to engine and low cost etc.
本发明对现有系统的改动较小，因此从现有系统进行升级成本较低，而且便于布署和容易实现。
The system is modified slightly by the requirement of the present invention, thus the cost for upgrading the existing system is low, and the disposal is convenient and easy to achieve.
本发明对现有系统的改动较小，因此从现有系统进行升级成本较低，而且便于布署和容易实现。
The system is modified slightly by the requirement of the present invention, thus the cost for upgrading the existing system is low, and the disposal is convenient and easy to achieve.
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