ＮＸＦ限矩型非接触式逆止器四川自贡运输机械总厂邓武山，王新民，彭方辉大倾角带式输送机都需要设逆止器。但直到８０年代初，国内仍无大容量、性......

One of the features of intron-containing genes of the nxf (nuclear export factor) family in different organisms is the p......