Adding a rotor blade (it had five on the main rotor and four on the tail) and using a modified exhaust system were among them.
增加一个桨叶(主桨有5个叶片，尾桨有4个)，并使用了改进的排气系统。
The main cooperation was on the onboard ATP system, which Hollysys documents describe as components in the nose and tail of trains that act as its' last line of defense in safety.
双方主要的合作领域是车载atp系统，和利时的文件称这一系统安装在高铁列车的车头和车尾，为列车起到“最后一道安全防线”的作用。
The main cooperation was on the onboard ATP system, which Hollysys documents describe as components in the nose and tail of trains that act as its' last line of defense in safety.
双方主要的合作领域是车载atp系统，和利时的文件称这一系统安装在高铁列车的车头和车尾，为列车起到“最后一道安全防线”的作用。
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