A perennial is a plant that lives indefinitely.多年生植物是指能存活很多年的植物。the perennial problem of water shortage缺水这个老问题I wonder at her perennial youthfulness.我对她青春常驻感到惊讶....
Description: Perennial herbaceous vines, with milky juice , glabrous throughout.形态特徵: 多年生草质藤本, 全体无毛, 有乳汁.Lythrum salicaria is a perennial herb , its root system is a fibrous like tap root system.千屈菜lythrumsalicaria为多年生宿根...
当然, 坐标系 ( x, y, z ) 轴向的选择是任意的.The choice of orientation of the ( x, y, z ) coordinate system is, of course, quite arbitrary.除此之外, 具有曲线型齿线之齿轮在运转时亦不会产生轴向的推力.Moreover, a gear pair with curvilinear - tooth traces operates wi...
The hospital blamed the mix-up on a clerical error.医院方面将这一混乱归咎于一处笔误。The recession is largely blamed for the disappointing response to the appeal.对此呼吁的反应令人失望，主要归咎于经济衰退。He blamed injudicious comments by bankers for last we...
Other proteins do penetrate into and, in some cases, all the way through the lipid bilayer.其他蛋白质则渗透到脂质双层(膜)中,而且在某些情况下一直透过脂质双层(膜).Bilayer electrostalic field plotter is transformed into monolayer electrostalic field plott...