- 更多网络例句与异龄的相关的网络例句 [注：此内容来源于网络，仅供参考]
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An alternative site productivity measure, based on the relationship between total tree height and diameter at breast height of dominant and codominant trees was used to quantify site productivity for major tree species in Taiwan.
为期能发展出一适用於混淆、异龄林分内测定地位生产力之替代方法，本研究选用地位生产力指数之概念，并以修正的三参数Weibull函数来建立优势木与次优势木之"树高-胸径"方程式，以推导出台湾地区各主要树种的地位生产力指数，则似为目前最为可行之方法。
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Isomaltooligosaccharide is a type of nature biological product, it can effectively promote the multiplication of bifidbacterium in human body.
李茂龄，低聚异麦芽糖的生理功能研究低聚异麦芽糖是一种天然的生理活性物质，具有明显的增殖双歧杆菌的作用。
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The confirmation method of mature level in uneven-aged forest is an insoluble problem both in forestry theory and forestry production at present.
以林木经济成熟径级确定为例，通过径级价值量被其径级材积除的模式转换办法，解析异龄林林木成熟的确定方法，进而为改善林业生产中异龄林采伐的盲目性提供依据。
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In mixed or uneven-aged stands, due to the lack of a height/age relationship, the site index is not a reasonably reliable site productivity measurement.
在混淆或异龄林之林分，由於其树高和年龄间之关系并非如单纯林那样明确，使得以树高-年龄为基础所导出的地位指数无法理想地适用於混淆人工林内。
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Uneven-aged forest stand ; matrix model ; transition probability ; parameter estimation
提出直接用直径生长量来估计异龄林林分生长矩阵中的转移概率。
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Firstly, according to study dynamic changes of the elements structures in succession about natural and artificial forest, then summarized regular patterns;at the same time.based on the study of Coupling Relationship between structure and function of water conservation forest established the ideal structures from the stand level and the watershed level. The ideal structures from the stand level: uneven-aged, double layer and mixed structure, and trend to natural forest. The watershed level followed the same principle, that is double layer patches, uneven-aged forest well-distributed and to build up different forest patches in watershed.
首先，经过对北京山区水源林天然林和人工林结构要素的演替动态研究，提出其发展规律，同时依据水源林结构与功能耦合关系研究，从林分层次和流域层次上分别构建了水源林的理想结构，其中，林分层次上水源林的理想结构为：异龄、复层、混交的结构状态，林分结构趋于天然林结构的特征；在流域层次上水源林的理想结构为也应形成&复层&、&异龄&、&混交&的结构，即：在流域各水源林斑块间形成林冠层复层、斑块内部乔木、灌木、草本层的复层；不同水源林年龄面积上的均匀分布；形成不同水源林斑块间的镶嵌分布。
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Implementation of the requirements for intensive management of commercial forests, and to determine the reasonable amount of logging in; banned to protect the forests of the main stand a better site conditions, the test can be stratified business uneven-aged forest; Yilin according to the site conditions Provides a different mode of reforestation; priority to the development of the industrialization of edible fungi, mountain vegetables, almonds, fruit juice, and other items.
实施方案要求对商品林进行集约经营，并确定了合理年采伐量；对公益林以封禁保护为主，立地条件较好的林分，可以试营复层异龄林；对宜林地按立地条件不同规定了造林模式；产业化重点发展食用菌、山野菜、杏仁产品、浓缩果汁等项目。
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The mainly study results as follows:(1) The study focused on the characteristics of whole distribution and typical structures of water conservation forest in moutain areas of Beijing. According to analized the structure of 18 typical forest stands, including the species structure, horizontal structure, vertical structure, quantitative indicators and standards.Conclusion that: uneven-aged, double layer and mixed structure were .
通过对北京山区水源林18种典型森林类型林分结构归纳总结，从林分物种结构、水平结构(混交度、年龄、郁闭度、大小比数)、垂直结构、生物量、土壤厚度等方面，提出北京山区典型森林类型的结构特征，并定量化表达，从而总结出北京山区水源林结构的关键要素是：异龄、复层和混交。
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At large scale, the result of comparing of optimization structure of forest type with the present structure of forest type illustrates that the present economical forest area is larger while the mixed forest is smaller. So decreasing economical forest area and increasing mixed forest area should be the main measurements to optimize spatial patterns. At small scale, the evaluation of the landscape inner structure index illustrates that the forest structure and coverage is smaller, which should be regulated and so the uneven-aged, multi-layered and mixed forest should be the object of the forest structure design.
大尺度上根据植被类型优化结构和现有植被类型结构数据的对比分析可知，现有经济林面积则过大，混交林面积较小，因此主要是减少经济林面积，改造针叶和阔叶纯林为混交林，从而增加混交林面积，以达到最优植被类型结构时的空间配置；在小尺度上通过对景观内部结构指数的计算分析可知，该区林分结构和郁闭度分指数值较小，应予以着力调整；由研究结果可知，异龄、多层次、混交的水源保护功能最好，因此稳定的林分结构设计目标就是尽量使林分形成异龄、多层次、混交林。
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Ovariectomies were performed in the OVX, OVX-E(OVX+nilestriol), L-ISO (OVX+soy isoflavones 30 mg*kg-1), M-ISO(OVX+soy isoflavones 60 mg*kg-1) and H-ISO(OVX+soy isoflavones 120 mg*kg-1) groups and animals in the SHAM group were subject to sham operation.
将10～12月龄的雌性Wistar大鼠随机分为6组：假手术组、切卵巢模型组、尼尔雌醇组、小剂量异黄酮组、中剂量异黄酮组、大剂量异黄酮组，每组8只。
- 更多网络解释与异龄的相关的网络解释 [注：此内容来源于网络，仅供参考]
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Metachromatic granule：异染颗粒
1)异染颗粒(metachromatic granule)又名转菌素(volutin). 它是一种强嗜碱性颗粒,主要成分为多聚偏磷酸盐,可能还含有RNA、蛋白质、脂类和镁,可用甲苯胺兰或次甲基蓝等蓝色染料染成红. 在生长平衡期形成,幼龄细胞中的异染颗粒很小,随着菌龄的增加而变大.
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undulated：起伏的,波动的
undesirable species 不良材种 | undulated 起伏的,波动的 | uneven aged forest 异龄林
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unexpended balance：未用余额
uneven-aged forest;异龄林;; | unexpended balance;未用余额;; | unexpended balance of commitments;未动用的承付款结存;;
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heterocercal fin：歪尾(鰭)
分犬龄珊瑚 Heterocaninia | 歪尾(鳍) heterocercal fin | 异时的 heterochronous
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Portunus trituberculatus：三疣梭子蟹
蟹类的寿命因不同种类而异,如中华绒螯蟹为2~3龄,三疣梭子蟹(Portunus trituberculatus)为4~5龄,溪蟹也为3~5龄,深水性的人面蟹(Homola)个体较大,体重可超过10千克,估计寿命可达10龄以上.
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understocked：立木度不足的
underprediction预测偏低 | understocked立木度不足的 | uneven-aged forest异龄林
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uneven-aged forest：异龄林
understocked立木度不足的 | uneven-aged forest异龄林 | uniform flow均匀流;等速流