Studies on the Height Growth Rhythm of Cutting Plant of Cottonwood Populus spp.;
三角叶杨扦插苗苗高的生长规律研究
Primary study on compression technology in wood of Populus tomentosa
以河北平原地区普遍种植的速生毛白杨木材为对象,通过压缩密化处理,测定素材和处理材的物理力学等性能,分析各因素对回复率的影响,寻找压缩密化的较优工艺条件。
Populus tomentosa×P. bolleana)×P. tomentosa
毛新杨×毛白杨叶片表型和春季萌芽时间QTL分析(英文)
Any of several North American poplar trees, especially Populus deltoides, which has triangular leaves and a tuft of cottony hairs on the seeds.
三角叶杨，棉白杨北美洲的一种杨树，尤指普通白杨有三角形叶片、种子上有束棉絮状绒毛
Any of various deciduous trees such as the tulip tree, basswood, or cottonwood.
白木树如美国鹅掌揪、椴、三角叶杨等各种落叶树
He picks a place with plenty of food he likes--the inner bark of aspens, willows, poplars, cottonwoods, or birches.
它所选的筑巢地还应有大量它所喜爱的食物----山杨、柳、白杨、三角叶杨或桦树的内皮。
Determination of Chrysin-7-glucoside in Leaf of Nalussieboldji with HPLC
HPLC法测定三叶海棠叶中白杨素苷含量
An Interview with Professor Yang Wuneng;
三叶一芽 三位一体——杨武能教授访谈录
Study on the establishment of regeneration of triploids of Chinese white poplar
三倍体毛白杨叶片再生体系建立研究
Female Gametogenesis and Polyploidy Induction of Populus Adenlpoda Mazim
响叶杨雌配子发生及三倍体诱导研究
Leaf nutrient diagnosis of triploid Populus tomentosa with DRIS
三倍体毛白杨叶片营养DRIS诊断
The Properties of Two Types of Determinants in Yang Hui s Triangle;
杨辉三角中两类行列式的性质及计算
On Yang Hui s Triangle and its Application;
“杨辉三角”行列式的定义、性质及其应用
Biological Characteristics and Larvae Secretion Analysis of Stauronematus Compressicornis
杨扁角叶蜂生物学特性及幼虫分泌物的研究
Pest risk analysis and management of Stauronematus compressicornis (Fabricius)
杨直角叶蜂在河南的危害与风险性管理
Leaf Nutrient Characteristic and Fertilizer Effect of Triploid Populus Tomentosa;
三倍体毛白杨叶片营养特性及施肥效应的研究
Development and Application of Graphics Information Triploid Populus Tomentosa
三倍体毛白杨叶片营养与林地养分动态研究
GC-MS ANALYSIS OF VOLATILE COMPONENTS FROM LEAVES OF DIFFERENT MYRICA RUBRA
GC-MS联用分析三个品种杨梅树叶的挥发油组分
On Conjectures of Two Deformations of Pascal s Triangle;
关于杨辉三角错位变体和克隆变体的猜想
Storage Quality Improvement of Myrica Rubra Fruits Through Coating With Antistaling Agent Consisting of Syzygium aromaticum (L.),Artemisiae argy (Levl.et Vant.) Extract and Locust Bean Gum
丁香、艾叶提取物与长角豆胶复合涂膜保鲜剂对杨梅耐藏性的影响
On Learning by Analogy in Teaching Advanced Mathematics from the Promotion of Yang Hui's Triangle
从杨辉三角形的推广谈高等数学教学中的举一反三