stem density的例句大全

based on the law of stand density effect, stand density control chart refers to a forest management chart formulated with the mathematical model of establishing the quantitative relationship between the stem density and each test stand density according to the theoretical principle of stand density effect.

林分密度控制图是根据林分密度效应法则理论，以林分密度效应规律为基础，建立株数密度与林分各测树因子之间的数量关系的数学模型来编制的一种森林经营图。

Eight adult fine-wool sheep were studied with Nucleus ruber adn substantia nigra in their brain stem. The results showed the length of nucleus ruber was 5.4mm, cell density of the nucleus was 1400/ mm3, Which were consisted by big and middle cell.

对8只健康成年科尔沁细毛羊脑干中的红核与黑质进行了研究，结果表明：红核长5.4lmm，细胞密度1400个／mm3，主要由大中型多极神经细胞构成；

Study on Effect of Stand Density on Tree Stem Form of Slash Pine

林分密度对湿地松林木干形影响的研究

Genetic Analysis on Combining Ability of Growth, Stem Form and Wood Basic Density of Pinus massoniana by testcross mating design

基于马尾松测交系子代的生长、干形和木材密度GAC/SCA分析

Stand density was reduced from 404 to 387 stem/ hm 2, and basal area from 44 83 to 43 79 hm 2.All species in high canopy layer except Acer mono decreased in number of stems.

林分密度从404株／hm2降至387株／hm2，而基础面积从44.83hm2降至43.79hm2。除色木槭之外，冠层林木的株数降低。

Results CT of brain stem hemorrhage showed high density hemorrhage and hematoma image.

结果脑干出血CT表现为脑干高密度出血及血肿影.

Differences in Morphological Characteristics and Seeding Quality of Melia azedarach Seeds from Different Provenances Provenance Variation in Growth, Stem-Form and Wood Density of Masson Pine at 24-Year-Old and the Provenance Division

不同种源苦楝种子形态特征和播种品质差异研究24年生马尾松生长、形质和木材基本密度的种源变异与种源区划

METHODS: Femoral bone marrow of the rats was extracted under aseptic condition. Bone marrow mesenchymal stem cells ( MSCs) were isolated with density gradient centrifugation.

方法：无菌抽取大鼠股骨骨髓，采用密度梯度离心法分离骨髓间充质干细胞。

In addition, single leaf weight, leaf density and thickness of tobacco leaves cured in bulk curing barn were bigger, whereas, percentage stem, balanced moisture content and tensile breaking strength were smaller.

另外，密集烤房烤后烟叶单叶重、叶质重与厚度较大，而含梗率、平衡含水率与拉力较小。

Excellent clones are selected for Beijing, through the economical weights analysis and index selection of industrial timber properties such as volume increment, timber total density, fiber length and stem straightness. The comprehensive breeding gain of industrial timber can be higher than 20%.

经过材积生长量、木材全年密度、纤维长度、主干通直度性状经济权重分析和指数选择，为北京点选出8个优良无性系，平均综合育种增益达20%以上。