Five patients underwent pulmonary valvuloplasty with unifoliate balloon and 6 patients with Inoue balloon initially .

先行球囊肺动脉瓣成形术（PBPV），其中6例采用肺动脉瓣单球囊，5例采用 Inoue二尖瓣球囊扩张；

Study on cold resistance of different alfalfa varieties . In this research alfalfa fall dormancy index was measured by unifoliate inter-node length ( UIL ) .

不同苜蓿品种抗寒性研究：本研究依据苜蓿子叶节长对不同苜蓿的秋 眠指数进行了测定，并首次对国内几个苜蓿品种进行了秋眠性的 鉴定；