查询词典 timber forest

Dead branches or knots in different sizes of tree was studied and different branch development phases of growth,suppression,death and self-pruning was analyzed to evaluate the effect that knot size and distribution impact on timber quality.Branch and knot dynamic models were developed using stand and tree variables.Based on multipleunit stepwise regression method, the individual tree growth model was established using forest and crown factors as the variable. The best taper equation model of Larix olgensis was bucking data of 130 sample trees selected in the studied area.

本研究以不同年龄、不同密度及不同立地条件的落叶松人工林作为研究对象，基于19块标准地中95株标准木的树干解析、枝解析及节子剖析数据，揭示了不同林分条件下林木的枝条数量及在树冠内的空间分布格局、生长发育规律；研究了不同大小树木的死枝和节子大小及其变化规律，分析了枝条的生长、被压、寿命和自然整枝过程，评价了节子大小和分布对木材质量的影响；以林分变量、林木变量和着枝深度等为自变量建立枝条生长和节子大小的动态预测模型；选择林分因子和林木的树冠因子作为竞争因子，用多元逐步回归的方法建立落叶松人工林与距离无关的单木生长模型，并根据研究地区选取的130株造材样木数据，建立了落叶松人工林最佳削度方程。

Forest products are timber, bamboo, rosin, turpentine, tea oil, tung oil, edible fungus, mushrooms, tea, ginkgo, Eucommia, bamboo shoots, Chinese chestnut and so on.

林副产品有木材、毛竹、松香、松节油、茶油、桐油、木耳、冬菇、茶叶、白果、杜仲、竹笋、板栗等。

A systematic study made in a clonal test forest in Linhai on timber properties of paper pulpwood of 20 new aigeiros clones of southern type shows that the fiber length in the trunk of these new clones gradually increases from the top to bottom,the fiber of the branches in the upper part of the canopy being shorter than that of the branches in the middle or lower part of the canopy

系统研究了来自浙江临海黑杨派南方型新无性系试验林 2 0个无性系的纸浆材主要木材性状。结果表明：黑杨派新无性系树干的纤维长度自上而下逐渐增长，树冠上部枝条的纤维较中、下部枝条为短

British west coast region, is a famous mountain and forest areas, timber, fruits, rich in marine resources and other assets; from the northern yukon and northwest territories district composed abounds in oil, natural gas, gold, lead and zinc.

西海岸区是卑诗省，是著名的山区和森林区，木材、水果、海洋资产等资源丰富；北部区由育空和西北领地组成，盛产石油、天然气、金、铅和锌。

An aerial view of the impact of the storm which devastated the huge Landes forest in Moustey, south of Bordeaux, France, where thousands of timber businesses are based.

风暴摧毁了法国波尔多南部的 Moustey 巨大的兰德斯森林。兰德斯森林是数以千计的木材企业的基地。

An aerial view of the impact of the storm which has devastated the huge Landes forest in Moustey, south of Bordeaux, where thousands of timber businesses are based.

波尔多南部Moustey 巨大的朗德森林遭受风暴摧毁之后的鸟瞰图，那里有数以千计的木材企业。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐