Lombardy poplar (Populus nigra varitalica)

The Effect of Water to the Conducting Tissue and the Mesophyll Tissue in the Leaves of Populus nigra var thevestina;

不同水分状况对箭杆杨叶中输导组织及叶肉组织的影响

【Objective】 The study is to Explore the best culture condition of axillary buds mutiplication and rooting in Populus nigra var thevestina tissue culture under normal temperature.

【目的】探讨常温下适宜箭杆杨试管苗腋芽增殖、生根的最佳培养条件。

The comparative studies on biochemical and physiological properties of Speeded-growth poplar and Lombardy poplar;

速生杨与钻天杨生理生化特性比较研究

the tall Lombardy poplar . . . towering high above all other trees (W.H. Hudson).

高大的箭杆杨…超出任何其他树的高度哈得孙）。

The King had a general called Yang Youchi who is very famous for his archery.

国王有位将军名叫杨有持，此人以箭术闻名。

Evaluation of Genetic Variation of Populus×Jianhumao and Research on the Tissue Culture Techniques;

箭胡毛杨遗传变异评价及组培技术研究

Analysis of isozyme on genetic relationship between Populus×Jianhumao and its parents

箭胡毛杨及其亲本遗传关系的同工酶分析

The flattened, weblike part of a feather, consisting of a series of barbs on either side of the shaft.

箭翎羽毛的压平的网状部分，由箭杆任一侧的一系列倒钩组成

Experiment Study on the Vibration Effect of Recurved Bow System by Using Different Shock Absorbers;

几种减振杆对弓箭系统的减振效果测试研究

Analysis of EST and PER isozyme of Populus×jianhumao and its parents

箭胡毛杨及其亲本酯酶和过氧化物酶的同工酶分析

Study on Agrobacterium-mediated Genetic Transformation of HbNHX_1 in Populus Pseudo-simonii Kitag;

农杆菌介导HbNHX_1基因遗传转化小青杨的研究

The Application of Photo-electric Optical Lever to Intel ligent Measurement of Young s Modulus;

光电光杠杆在杨氏模量智能测量中的应用

On the Error of Yang s Modulus and the Improvement of Instrument;

用光杠杆测量杨氏模量的误差分析及改进

Effect of Bacitracin Methylene Salicylic Acid Supplement in Diet on Performance of Growing-pigs

亚甲基水杨酸杆菌肽对生长猪饲养效果研究

Study on Bolting Technology of Angle of Coal Seam Variation Belt in YangZhuang Coal Mine

杨庄煤矿煤层倾角变化带锚杆支护技术研究

Study of Agrobacterium Tumefaciens-mediated Transformation of Shanxinyang for TCS Gene

农杆菌介导TCS基因转入山新杨的遗传转化研究

Influence of Lever Arm Effect in Platform Inertial Navigation System of Launch Vehicle on Injection Accuracy

运载火箭平台惯导系统杆臂效应对入轨精度的影响

Yearly Quartic Cropping Pattern of Choice Vegetables and Matching Techniques in Wuhan Region;

莴苣—苋菜—豇豆—箭杆白一年四茬高效栽培模式及配套技术

Yearly High Yield Culture Pattern of Four Vegetable Species in Wuhan Region;

早春苋菜—套春豇豆—夏豇豆—秋箭杆白周年生产高产高效栽培模式

Preliminary Study on Burl of Chinese White Poplar Forming s Anatomic Feature and the Test for Agrobacterium Tumfacience Distribution in Chinese White Poplar;

毛白杨瘿木形成的解剖学特征初步研究与毛白杨体内农杆菌的检测

The survival and escape of Agrobacterium tumefaciens in triploid hybrid lines of Chinese white poplar transformed with two insect-resistant genes

转抗虫基因三倍体毛白杨植株体内农杆菌残存与逃逸