SEMabbr.扫描式电子显微镜（=scanning electron microscope）abbr.研讨会（=seminar）Semlin塞姆林

1. It was found, in one livestock elite station of Xuzhou, the ejaculum quality,eros and performance of some adult bulls were poor in recent years.
   近几年来，徐州市某家畜良种站饲养的部分成年公牛表现常年精液品质不良，性欲差，生产能力低下。