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- introduction of tree species 树木引种
- For the majority of tree species this method appears to be very well suited. 对于大多数树种来说，这个方法看来都是适合的。
- introduction of exotic tree species 林木引种
- Application of cone calorimeter for the assessment of the fire resistance of tree species. 利用锥形量热仪分析树种阻火性能。
- This site offers information of the association, its membership and application, arborist links, educational links, introduction of tree problems and settlement. 本网站介绍了协会的发展历史、会员信息以及协会的林业专家目录等，另外，还提供了林木问题的解释和解决方案，和有关教育资源的链接等。
- Mckenny H J A, Kirkpatrick J B. The role of fallen logs in the regeneration of tree species in Tasmanian mixed forest[ J ]. Austrilian Journal Botany, 1999,47:745 - 753. 班勇徐化成.;兴安落叶松老龄林落叶松林木死亡格局以及倒木对更新的影响[J]
- O. hosiei is on upper layer of tree species and has significant relative dominance and absolute advantages in competition for illuminance in the forest. 红豆树在群落中处于乔木上层，为林中霸王木，具有较显著的相对优势度，成林后对光照条件的竞争具有绝对优势。
- Introduction of a venom into animal tissue. 毒液的输入毒液输入动物的细胞组织
- The new record-breaking tree was discovered in Dalarna in 2004 when Swedish researchers were carrying out a census of tree species in the region, Kullman said. 卡尔曼说，这棵“打破纪录”的树是2004年瑞典研究人员在达拉那一带进行树种调查时发现的。
- The writer is of the opinion that some site factors, such as climate, microtopography and soil are intimately correlated with the distribution and growth of tree species. 针对江苏海岸各种立地环境条件,论述了如何选择先锋树种和后继树种,使海岸造林取得预期效果。
- The introduction of the metric system in Britain is being phased. 英国引进米制度量衡制度的工作正在分阶段进行。
- They built a primitive shelter out of tree trunks. 他们用一些树干建造了一个简陋的棚子。
- Introduction of current use and study on hibiscus tree species 木槿属树种应用与研究现状分析
- What kind of/sort of tree is that? 那是什麽树?
- The government saw the introduction of new technology as vital. 政府认为引进新技术至关重要。
- The number of tree species that contributed to CWD increased along the successional sequence with 7, 18, and 29 species in the Pinus massoniana, mixed coniferous broad-leaved, and monsoon evergreen broad-leaved forest sites, respectively. 组成马尾松林、针阔叶混交林和季风常绿阔叶林CWD的树种数量分别为7、18和29;
- From the viewpoint of height class structure,the compositional complexity of tree species H(X),structural complexity of tree species H(Y|X),and complexity of whole community H(X,Y)all increased first,but decreased then with the succession. 按高度级结构计算的群落树种组成复杂性H(X)、层次结构复杂性H(Y|X)、群落总体复杂性H(X;Y)均呈先增加后减小的趋势:H(X)指数值在演替初期阶段为2.;96;演替中期增加到3
- Pinus sylvestriformis and P. sylvestris have been introduced to Zhanggutai sandy area since 1981 aiming at the shortage of vegetation and unitary structure of tree species in Keerqin Sandland. 摘要针对科尔沁沙地治沙植物匮乏、树种结构单一等问题，自1981年开始，在章古台沙地引种长白松和欧洲赤松。
- The introduction of changes is usually resisted. 改革的推行通常会受到阻力的。
- We made camp under the shade of trees. 我们在树荫下宿营。
