查询词典 vegetative layer

It can be divided into arborous layer , shrub layer , herbaceous layer and interlayer plants which are numerous in quantity.

群落外貌终年常绿，可分为乔木层、灌木层、草本层和层间结构等层次。

Species richness and diversity of arborous layer were higher than herbaceous layer but lower than shrub layer in various vegetations except deciduous broad-leaved forest at vertical structure.

从群落特征参数值来看，人为干扰对植物群落特征和结构造成了一定的影响，同种干扰类型下，平均树高、平均胸径、立术密度等表现出相似的规律。

When the gas flux is constant, the ratio of reduced resistance is improved with the increase of the water stream velocity. However, the relationship between the gas flux and the ratio of reduced resistance is more complex. When the water stream velocity is constant, if the gas flux is small in contrast, the effectiveness of reduced resistance is not obvious. But when the gas flux increased, the jetted gas will form """"archform"""" which will augment the shape resistance. In this condition, resistance could not be reduced and could even be increased, if the gas flux continues to be increased. So that there needs setting a baffle called step, which introduces the jetted gas into the turbulence boundary layer. In this case, the shape resistance may be fairly great. Besides, the waterline of model has also some effect on the ratio of reduced resistance, which acts on the size of wave. If waterline is deep, the wave could not affect the deployment of microbubble layer, so there is almost no effect on ratio of reduced resistance. However, the wave would affect distributing of microbubble layer under the model so that the gas could leak out from the two sides of model and directly affect the ratio of reduce resistance if the waterline is very small. Whether installing the dashplate or not has also the great influence on the effectiveness the ratio of reduced resistance. From the results of experiment, conclusion is that adding dashplate will greatly improve the effectiveness of reduced resistance.

当喷气量一定时，水流速度增大，减阻率提高；喷气量与减阻率之间的关系比较复杂，速度一定时，如果喷气量较小，减阻效果就比较差，但当喷气量增大的话，喷射出的气体就会形成一个&拱度&，增加了船模的形状阻力，在这种情况下最好采取断阶喷气，把气体引入到湍流边界层中，在这种情况下，船模的形状阻力比较大；船模的吃水对减阻率也有一定的影响，主要表现在波浪大小上，如果吃水较深，波浪影响不到微气泡层的分布，对减阻率不会造成太大影响，如果吃水较浅，波浪就会影响到微气泡层在船模底部的覆盖情况，可能会有部分微气泡从船模两侧泄漏，这样就直接影响到了减阻效果；是否安装压浪板，对减阻率也有较大的影响，从试验结果可以看出，在船模尾部加设了压浪板时，减阻效果明显得到改善。

Most of photos show an atretic follicle with central vascular structure, a layer of atrophic and splindle granulosa cell layer and a somewhat lutinized theca interna layer which is merging with ovarian stroma.

多数照片显示为具中央脉管结构的闭锁卵泡，一层营养层加上梭形粒层细胞以及被卵巢间质吸收融合的某些黄素化卵泡膜内层。

Under the different sowing seeds way the soil ulmin, the alkaline hydrolysis nitrogen, the fast-acting phosphorus content present the tendency which in 0-40cm various soil layers increases along with the soil layer depth reduces, take 0-10cm soil layer soil content as biggest; The change tendency which the colleague mixes broadcasts mixes with the interlacing broadcasts the change tendency which the lawn fast-acting potassium presents reduces, after the unicast awnless brome lawn presents falls first, increases again falls, take 0-10cm and 20-30cm soil layer soil content as biggest, is 80, and achieves the extremely remarkable difference with other soil layers between; pH presents increases the tendency.

混播草地上牧草根系死亡后，能在土壤中遗留大量的有机质，在土壤微生物的作用下形成土壤腐殖质，其中有丰富的氮、磷、钾等元素。无芒雀麦，又名禾萱草，无芒草，是世界上分布较广，应用较多的优良牧草；是草地补播和建立人工草地的理想草种。无芒雀麦生长快，竞争力强，在杂草较多的草荒地上种植，也能获得成功，为我国温带和寒温带建造人工草地的当家草种。

Uses method which the field investigation sample and the indoor analysis unify, 2007-2008 years live the unicast awnless brome lawn and the awnless brome and the alfalfa interlacing in the Inner Mongolian nationality university agriculture school test farm take 2 years mix broadcast the lawn and the colleague mix broadcast the lawn as the objects of study, have studied under the different sowing seeds way the forage grass to the soil physics and chemistry nature influence, finally indicated:the change tendency which under the different sowing seeds way increases the soil bulk specific gravity overall along with the soil layer depth to present after reduces first increases, is the 10-20cm soil layer is lowest; Looking from the 0-40cm soil layer's mean value, the unicast awnless brome lawn soil bulk specific gravity is smallest, the colleague mixes broadcasts the lawn soil bulk specific gravity to be biggest.

科尔沁草原是典型的农牧交错地区，长期以来，由于不合理利用草地资源造成该区生态环境严重恶化，农牧业生产受到严重影响[1]。建立高产优质的人工草地是解决我国高寒地区草畜供求季节不平衡的矛盾，促进草地畜牧业持续发展的关键措施之一[ 2]。无芒雀麦和紫花苜蓿都是营养价值高、适口性好、抗寒抗旱能力强的多年生牧草。将这两种牧草混播不仅能提高牧草产量和品质，延长草地使用年限，还能改善牧草的营养，提高牧草的适口性，有利于调制和青贮[3]。

Biomass of 10 plant species including Castanopsis fargesii,Pleioblastus amarus, Lindera strychnifolia,Vaccinium bracteatum,Ficus simplicissima(approximately account for 37%of total plant species in shrub layer) account for 84.15%of total biomass in shrub layer.Biomass of Woodwardia japonica and Blechnum orientale account for 93.3%of total biomass in herb layer.

在灌木层中，丝栗栲、苦竹、乌药、乌饭、三龙爪等10种灌木层植物(约占总灌木层种类的37％)占灌木层总生物量的84.1％；在草本层中，狗脊和乌毛蕨2种植物占草本层总生物量的93.3％，这说明林下灌木层和草本层植物的生物量主要集中在少数植物种类中。

Considering the shortcoming of thick epitaxial layer technology , author proposed a thin epitaxial layer ldmos used n - burry layer .

针对目前厚外延工艺的缺点，提出的薄外延ldmos 采用n 埋层，通过优化n 埋层长度、注入剂量可提高器件耐压。

The results can be expressed as follows:(1) With the increase of water phase content, the amine salt aggregated orderly in different forms such as W/O micro-emulsion, nodus-knot catenulate aggregates, layer liquid crystal and O/W micro-emulsion.(2) In layer liquid crystal, SO〓 mainly combined with amine salt cation by two oxygen atoms in bridge.(3) In UV-VIS spectrum of layer L. C., there is an absorption about 500 nm and "light short circuit"appeared about 430 nm. These phenomena may be very important for measuring the distance between the layers of the L.

研究发现该体系随水相含量的增加，胺盐发生不同形式的有序缔合，分别形成了W/O型微乳液、&节-结&型链状缔合体、层状液晶和O/W型微乳液：在层状液晶中，SO〓主要以桥式双齿配位形式存在，中性胺分子有利于体系中液晶的形成；层状液晶于500nm波长处有一吸收峰，在430nm附近发生&光短路&现象，该现象可能对测定层状液晶的层间距有重要意义。

The biomarkers such as the n-Alkanes, the isoprenoids, the terpane, and cholestane were detected through GC-MS analysis. Based on the study of the biomarkers, the biological evolution during Permian and Triassic can be divided as three stages, namely, the mixing source stage of low biota such as thallose and advanced plant in late Permian (below bed 63), the stage of low biota such as thallose in the boundary transitional layer (bed 63-69) and the mixing source stage of advanced plant and low biota such as thallose in early Triassic (above bed 69). What's more, the second stage near the boundary transitional layer can be subdivided into 4 stages. The stages of biota evolution is close related with sedimentary environment changing and the boundary transitional layer.

利用GC—MS分析技术，在陆相地层中检测出正构烷烃、类异戊二烯烷烃、萜烷和甾烷类生物标志化合物并根据生物标志化合物和特征值研究，将二叠系—三叠系生物演化划分为三个大的阶段，即晚二叠世的菌藻类低等生物与高等植物混源阶段（63层以下），界线异常层的菌藻类低等生物阶段（63-69层）和早三叠世高等植物与菌藻类低等生物混源阶段（69层以上），界线附近异常层的第二阶段又进一步细分为4个次一级阶段，生物演化阶段与沉积环境变化及界线异常层具有非常密切关系。

He studied their excrement for evidence of livestock hair.

他为家畜毛的证据研究他们的粪便。

Loneliness is not grounds for deportation, deportation of the people are not all lonely people.

寂寞也不是放逐的理由，放逐的人也并不都是孤独的人。