In this paper,four schemes of Hybrid Automatic-Repeat-Request(HARQ)for Orthogonal Frequency DivisionMultiplexing(OFDM)systems are evaluated when they are used i
用CPPU50倍液在巨峰葡萄花后10天浸蘸果穗,可使果粒增重0.5-2.5g,座果率提高5.6%-14.3%,增产39.0%-46.5%,果粒可溶性固形物变化不明显,成熟期提早3天左右。
With CPPU50 times in Kudzu grape 10 days after dipped in e