The results shows that, expect for the yield of pulp, juvenile wood of improved plantation have better pulping performance than ripe wood of general plantation on the tearing resistance, bursting strength, tensile strength and brightness.
采用经过多年度多重复选择改良的良种马尾松幼龄材与一般马尾松成熟材进行造纸性能比较研究。
Density Comparison on Juvenile and Mature Wood of Chinese fir in Changlinggang Forest Farm
长岭岗林场杉木幼龄材与成熟材密度比较
Demarcation of Juvenile Wed and Mature Wood of Planted Chinese Fir and Its Wood Quality Prediction
人工林杉木幼龄材与成熟材的界定及材质早期预测
Study on the effects of primary planted density of young trees of the construction timber forest of China fir
杉木建材林初植密度幼龄期效应的研究
The Study on the Infant Timber Structure of Introduced Populus spp. Clone in Shandong Province;
山东引种杨树（Populus spp.）无性系幼龄木材解剖结构的研究
Radical Variation and Prediction Model of Wood Anatomical and Crystallinity of Young Dalbergia sissoo Plantation
人工幼龄印度黄檀木材解剖性质和结晶度的径向变异及预测模型
The Morphology and Differential Variation of Dauerlarvae(L_(Ⅳ)) of Bursaphelenchus xylophilus and B.mucronatus
(拟)松材线虫耐久型四龄幼虫(L_(Ⅳ))的形态及其分化变异
A child who is not old enough to attend kindergarten.
学龄前儿童因年龄小而未能上幼儿园的儿童
Responses to Simulated Nitrogen Deposition of Different Ages of Eucalyptus Dunnii Young Growth
不同年龄邓恩桉幼龄林对模拟氮沉降的响应
The young beetle larvae can eat hundreds of aphids.
而幼龄瓢虫则可吃掉数百只蚜虫。
irrespective of sex [age]
性别 [年龄] 不拘,不论男女 [老幼] 均可
Structure and dynamics of insect community in young longan orchard
幼龄龙眼果园昆虫群落结构及其动态
Growth and Development of Young Jujube in Water-saving Cultivation
节水栽培地幼龄枣树生长与发育规律
Study on the biomass of Eucalptus grandis pulp raw material young growth in Sichuan;
四川巨桉纸浆原料林幼龄生物量研究
Bacterial and Fungal Parasites on the Second Stage Juvenile of Soybean Cyst Nematode in China;
大豆胞囊线虫二龄幼虫寄生菌的研究
The key technical measures research of new-planted young tea garden cultivation and management
新种幼龄茶园栽培管理关键技术研究
Determination of Sex and Maturity by Using Ultrasonography in Large-scale Cultivation of Young Sturgeon
利用超声波技术鉴定幼龄鲟鱼的性别
There has been a tendency for workers in different displines to define a plant as mature or juvenile.
各个学派的工作者明确划分一株植物是在成熟龄还是在幼龄。
Differential Expression of NGF, Bcl-2 and Bax Gene in Aged and Young Rats after Fluid Percussion Brain Injury;
老龄和幼龄大鼠液压脑损伤后NGF、Bcl-2、Bax基因表达差异