To fore and after center, adopt electric engine lead screw secondary controller;

前后对中采用电机丝杆副调节；

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Having a secondary Ajax controller (such as a servlet or Web service) forces a stronger separation of your model code.

使用二级ajax控制器(如servlet或Web服务)可以进行更强大的模型代码分离。

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Therefore, the condensate controller automatically vents the bypass or secondary steam .

所以，凝结水控制器能自动将旁路或二次蒸汽排出。

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Aside from officially detailing tweaks to its Wii U Gamepad today, Nintendo has announced a secondary controller for those who'd prefer a more traditional control method.

ENGADGET: Nintendo teases Wii U Pro Controller, black Wii U hardware (update: video)

We use a Buslogic FlashPoint LT card to evaluate the SCSI drives, and we install the IDE drives as slaves to the DVD-ROM drive's master on the integrated IDE controller's secondary channel.

CNN: Top 5 CD-rewritable drives