单叶的

A leaf theoretically compound, though only expressing a single leaflet and appearing simple, as in Cercis.

具一小叶的 Unifoliate 理论上是复叶，实际为单个小叶，看似一枚单叶的叶子，如紫荆。

A leaf shape; pinnate with a single leaflet at the apex .

一种叶子形状；在顶点有一单叶的羽状叶。

With the increasing of soil moisture,the individual leaf area,the leaf dried mass per seedling,the leaf fresh mass per seedling and leaf area per leaf dried massincreased,but the leaf thickness and succulence degree decreared;The content of leaf chlorophyll was sensitive to soil moisture,under 5 kinds of different soil moisture status and the content of leaf chlorophyll was ...

结果表明：随着土壤含水率的增加，单叶面积、单叶鲜重、单叶干重、比叶面积逐渐增大，但叶片厚度、肉质度减小；叶片的叶绿素含量对土壤水分状况较为敏感，5种水分处理下苗木叶片的叶绿素含量有较大的差异。

This species has been hypothesized to be a possible transitional taxon between trifoliolate species and ones with simple leaves in this genus.

本种已经被假设为可能是具三小叶的种和具单叶的种之间的过渡分类群。

The phanerophytes ofMeso.,Coriaceous,entire margin and single leaf are main components of understory plants.

具中型、革质、全缘单叶的高位芽植物是决定该群落林下植物外貌的主要成分。

Any of various evergreen trees of the genus Abies, having single, flattened needles and erect cones with deciduous scales.

冷杉，枞树冷杉属中的任意一种常青树木，有单叶的扁形针叶和直立的每年都剥落鳞片的球果

Stipules absent. Leaves alternate, simple, odd-pinnate, or digitately trifoliolate; blades of simple leaves entire at margin, those of compound leaves crenulate, crenate, lobulate, or rarely entire at margin.

托叶无。叶互生，单，奇数羽状复叶，或者掌状具三小叶；单叶的叶片边缘全缘，复叶的边缘具细圆齿、圆齿，或具小裂片，或者很少边缘全缘。

Leaves opposite, mostly simple and palmately lobed, sometimes leaves pinnately veined and entire or pinnately (7-)11-21-foliolate, usually estipulate.

叶对生，多数为掌状分裂的单叶，有时全缘的羽状脉单叶，或者羽状复叶具(7-)11-21小叶(金钱枫属Dipteronia)，通常无托叶。

Main conclusions are as follows:(1) changes of leaf morphological and anatomical structures with tree height:25 researched tree species exhibited xeromorphic structures at tree top,that is,toward tree top,leaves were with 1 increased cuticle thickness;2 developed palisade tissue and even double-palisade structure;3 densely arranged tissue cells;4 smaller cells;5 thicker epidermis,smaller and denser stomata;6 smaller and thicker leaf,great LMA value.

本文主要得出以下结论：(1)叶片结构随树高的变化：研究的25种树种表现为越往树顶处：1角质层越厚；2栅栏组织越发达，全栅特征越明显；3叶组织细胞排列越紧密；4叶肉细胞越小；5表皮层越厚，气孔越小而密、单叶的气孔总面积越小；6叶片越小而厚，LMA越大。

Treatments were as follows: fertilization during leaf-expansion period, fertilization during green-leaf period, and no fertilizer. Results showed that individual leaf area, thousand-leaf weight, and leaf distribution were relatively stable with little influence from fertilization. Fertilization during leaf-expansion compared to the green leaf period significantly increased leaf number, leaf weight per plant, and leaf area index. Fertilization during led-expansion also significantly increased the total weight of leaves corresponding to each branch. The 14th to the 17th branches had the largest number of leaves in the canopy with fertilization increasing the weight of each branch but not changing the center of the canopy.

结果表明：毛竹单叶面积、千叶质量和叶片分布受施肥的影响较小，是较为稳定的指标；展叶期施肥处理（处理1）能显著增加单株立竹的叶片数量，到7月底，其单株立竹叶片总质量和叶面积指数分别比绿叶期施肥（处理2）提高14.8%和13.7%，比不施肥提高27.6%和24.5%；冠层14~17档是单枝叶片数量最多的区域，施肥能增加各枝盘叶片的质量，但对林冠重心的分布无影响；单叶叶面积稳定后（6月），处理1的叶绿素测定值和光合速率显著高于处理2和对照，而处理2与对照间无显著差异。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。