The sufficient and necessary conditions of existence of the univalent harmonic orientationpreserving mappings f(z) are given,and f(z) satisfies the equation f =a(z)f z for given Beltrami coefficient a(z)= e iθ (z-a 11- a 1 z)(z-a 21- a 2 z) and maps unit disk U onto a given polygon P .
给出ａ（ｚ）＝ ｅｉθ（ ｚ－ ａ１１－ ａ１ｚ）（ ｚ－ ａ２１－ ａ２ｚ）存在将单位圆盘单叶调和保向地映射为已知的多边形并满足给定的Ｂｅｌｔｒａｍ ｉ方程ｆｚ＝ ａ（ｚ）ｆｚ 的映射的充分必要条件。
It is given that the sufficient and necessary conditions of existence of the univalent harmonic orientationpreserving mapping f(z) which satisfies the equation f =a(z)f z for given Beltrami coefficient a(z)= e iθ ((z-α)/(1-z)) m,m=1,2 and maps unit disk U onto a given polygon P .
我们给出当ａ（ｚ）＝ｅｉθ（（ｚ－α）／（１－αｚ））ｍ，ｍ＝１，２时存在将单位圆盘单叶调和保向地映射为已知的多边形并且满足给定的Ｂｅｌｔｒａｍｉ方程ｆｚ＝ａ（ｚ）ｆｚ的映射的充分必要条件。
Rapid Propagation and Flowering of Calamus simplicifolius in Vitro;
单叶省藤萌蘖芽组培快繁技术及试管内开花
An Analysis on Growth Character of Tissue Culture Families of Calamus simplicifolius;
单叶省藤组培家系的生长特性分析
A comparison on planting effect of tube seedling and normal seed seedling of Calamus simplicifolius;
单叶省藤组培苗与实生苗的造林效果分析
HPLC-DAD/MS/MS Analysis of Tea Polyphenols in Leaves of Baiyedancong and Huangguanyin;
白叶单枞和黄观音茶树芽叶中茶多酚的HPLC-DAD/MS/MS分析
OBJECTIVE Tea polyphenols in fresh leaves of two oolong tea cultivars (Baiyedancong and Huangguanyin) were identified and determined.
目的对白叶单枞和黄观音两个广东乌龙茶和闽南乌龙茶的代表品种茶鲜叶中的茶多酚进行定性、定量比较分析。
Method: The pliers leaf selects the Kielland obstetrical forceps is left or the right leaf,In the vaginal midwifery,The single leaf of obstetric forceps laying aside occipital bone side underneath is the pivot,The single leaf of obstetric forceps tightly pastes the embryo head,Under the pl.
目的:随着围产医学的发展,我科在产钳术的基础上,使用单叶产钳助产60例的临床应用。
minimum ellipse of a hyperboloid of one sheet
单叶双曲面的最小椭圆
THE EXPERIMENT OF CUTTING CAMELLIA OF SINGLE PART AND SINGLE LEAF WITH NAA DISPOSED;
NAA对山茶花单节单叶扦插的影响
type genus of family Ulmaceae; deciduous trees having simple serrate leaves; widely distributed in temperate regions.
榆科的模式属；歪形单叶的每年落叶的乔木。
Pinnately compound with a single terminal leaflet, as in the leaves of the rose plant.
奇数羽状叶的与顶端羽状单叶接合的，如蔷薇科植物的叶
family of flowering plants having a single cotyledon (embryonic leaf) in the seed.
在萌芽阶段单子叶（胚胎叶）开花植物科。
monotypic family of aquatic plants having narrow leaves and small flowers.
水生单子叶植物的一科具有窄小的叶子和小花。
a monocotyledonous genus of West Indian feather palms.
西印度羽状叶棕榈的一个单子叶植物属。
Single white. Medium green, plain, glossy. Standard.
单瓣白色花。中绿色叶，平坦叶面光滑。标准型。
type and sole genus of the Clethraceae; deciduous shrubs or small trees: white_alder, summer-sweet.
桤叶树属的模式单属；双子叶的灌木或乔木。
One way Fluid Solid Interaction of Unshrouded Centrifugal Compressor Impeller Blade
半开式离心压缩机叶轮叶片单向流固耦合分析
Cotyledon (seed leaf) the first leaf of the embryo of seed plants, which is usually simpler in structure than later-formed leaves.
子叶：种子植物胚胎的第一片叶，在结构上通常比后来形成的叶简单。
Single medium blue. Medium green, pointed, hairy, serrated. Standard.
单瓣中蓝色花。中绿色尖型叶，叶面多毛，锯齿叶缘。标准型。
an order of monocotyledonous herbs.
单子叶草本植物的一个目。
an order of aquatic monocotyledonous herbaceous plants.
水生单子叶草本植物的一个目。
a family of tropical monocotyledonous plants of order Musales.
热带单子叶植物芭蕉目的一科。
a monocotyledonous genus of the family Iridaceae.
鸢尾科的一个单子叶植物属。
The lean man leans on the clean bean plant to read a leaf leaflet.
瘦人斜*干净的豆科植物上读叶片传单.
isolated deficiency of anterior pituitary hormone
单一性垂体前叶功能不全