您要查找的是不是：
- Population structure of Betula dahurica families in Xiaolongmen forest farm was assayed.The specific life table was drawn.According to the table,the survivorship curve and death curve were analyzed. 调查小龙门林场棘皮桦林的种群结构,编制棘皮桦的生命表,绘制种群的存活及死亡曲线进行生存分析。
- Betula dahurican. 黑桦
- Angelica dahurica Benth.et Hook.f. 白芷
- Cimicifuga dahurica(Turcz.)Maxim. 兴安升麻
- Study on resin exudation in Larix dahurica Turcz. 兴安落叶松脱脂研究的现状及发展趋势。
- Angelica dahurica( Fisch. ) Bench. et Hook. 兴安白芷
- Betula pendula × B. pendula var. cardica Sok. 欧洲白桦
- Studies on the Chemical Constituents of the Leaves of Betula platyphylla Suk. 白桦叶化学成分的研究
- Angelica dahurica is one of medicinal material of our country in common use. 白芷为我国常用大宗药材之一。
- The microwave-assisted extraction(MAE) of betulin from Betula platyphylla Suk. 利用均匀设计法优化了微波辅助提取白桦树皮中桦木醇的工艺。
- Diffuseporous wood is seen for example in yellow birch (Betula lutea). 加拿大桦（黄桦）的木材即为散孔材。
- Carbon storage of and Betula albo-sinensis were higher than other three types. 锐齿栎、油松主要分布于中低海拔地带；
- Toadstools were collected from a range of pure stands of Betula and Pinus both in Britain and the U.S.A. 从英国和美国一系列桦木和松树纯林中收集蕈体。
- Methods Use weighing method to weight the dry matter and an HPLC method to determine the content of isoimperatorin in A. dahurica root. 方法采用称重法测定白芷干物质，高效液相色谱法测定根中异欧前胡素。
- A pair of primers was designed based on the analysis of MADS3 from Betula petulla and AP1 from Arabidopsis thaliana. 在分析了欧洲白桦MADS3与拟南芥AP1中的保守性后,设计了一对引物。
- AIM: To prepare the solid dispersions of angelica dahurica coumarins and measure their dissolution characteristics. 目的:制备白芷香豆素不同载体固体分散体,并检测其体外溶出特性。
- Definition: Angelica Dahurica Root is the root of Angelica dahurica Bentham et Hooker (umbelliferae). 本品为伞形科植物兴安白芷 Angelica dahurica Bentham et Hooker 的根。
- The accumulation of isoimperatorin was the highest in the end of October when A. dahurica was harvest. 异欧前胡素积累量在10月底收获时达到最大。
- The fluctuant and conventional drying technologies for22 mm-thick Birch( Betula platyphylla) were tested and compared. 进行了桦木波动干燥工艺和常规干燥工艺的对比试验。
- We still skim the backwaters of ponds and streams for the seed of Betula, Acer Salix and Populus species. 我们仍然要在池塘的静水上和溪流中捞取桦木，槭树、杨、柳等树的种子。
