leaf tissue 基本例句 叶片组织 We also studied factors effecting the variation of P. hybrida by tissue culture.并对矮牵牛叶片组织培养及产生变异的影响因素等进行探讨。 The variations ofleaf tissuestructure in the air-curing process of burley tobacco were studied.木文对白肋烟晾制过程中叶片组织结构变化进行了研究。