The bench test results indicated that the metering quality of the dibbler was increased significantly after improvement.

架试验结果表明，穴播器经改进后对棉种播种有了较大提高。

In this paper, we utilize current equipments such as dynameter and specific fuel consumption detector, and design a set of engine test bench platform based on P89C668.

根据发机架试验测试平本要求,充分利用了测功机、油耗仪等原有设备,开发了于P89C668发机架试验测试平,实现了显示、打印、控制和通讯等功能。