针对机器人单关节的运动控制，设计了集直流电机运动控制和驱动于一体的关节伺服控制器。
In order to control the single joint's motion of the robot, a joint servo controller which integrates motion control and driving of the DC motor is designed.
玉米的杂交不亲和性是受单基因控制的，为配子体控制型，该基因位于玉米的第四染色体上。
Cross incompatibility in Zea mays is controlled gametophytically by a single locus. The gametophyte gene is located on chromosome 4 in maize.
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