面积单位

On the basis of brief introduction to fundamental theory of FD8, a new algorithm to accurately calculate the effective contour length in the accumulated flow partitioning involved in 1n computation by using internal tangent circle on conical surface method was proposed.

本文首先介绍了多流向算法的基本原理，并基于此对流动累积分配中的有效等高线长度精确计算提出了几何锥面内切圆算法，同时改进了传统的地形指数中单位等高线汇流面积α的计算方法，增强了多流向算法对DEM中异常栅格的处理能力。

The stem wide and SLA and yield of small cushaw were significantly increased,too.

也能使茎秆粗壮，有效地促进单位叶面积内干物质的积累，明显提高小南瓜的产量。

Based on the information taken from the subcompartmental records a comparison between the actual and normal forests was made and a new point of view was proposed in the article: in the case of cultivating timber-forest which is different in cutover age, age class and growing speed within the range of the whole forest station, the forest age class distribution showing the opposite shape of "J" is of more benefit to keeping the relative stability of all the age class area than the age class distribution of th...

本文在统计森林资源小班档案卡片有关资料的基础上，把现实林分与法正林相比较，用法正林学说来指导全场森林的调查。并提出了一个新的观点：在整个经营单位内，培育不同生长速度，不同主伐年龄，龄级期不同的用材树种，森林的龄级结构呈反"J"形分布此法正分布更有利于维持各龄级面积的相对稳定，并且，年伐量的波动不大，有利于森林的永续利用。

Energy consumption of every year become lower, but the degree of changing is degression .

当使用寿命超过50年时，单位面积年能耗值的变化将趋于平缓。

Calculation results show that the solar heating system could enhance desorption temperature,improve performance of continuou...

计算结果表明，该太阳能集热系统可有效地提高吸附剂解吸温度及单位集热面积的制冷功率，实现太阳能的高效利用。

Tillering in rice is one of important agronomic trait that determine grain yield. Tillering is also of developmental importance because tiller is special type of branches which is quite different from that of dicot plants. M0C1 gene can control formation of axillary meristematic tissues and tillering bud in rice, and its subsequent outgrowth.

分蘖是水稻等禾谷类作物最重要的农艺性状之一，它直接决定着水稻穗数的多少并进而影响水稻单位面积的产量；分蘖又是单子叶植物一种特殊的分枝现象，具有重要的发育生物学意义。

It was suggest that the yield of tobacco in unit area was significant increasing and the quality was improved along with the altitude increase in Liuyang tobacco area. The tobacco leaves production at the place where the altitude from 400 meter and 900 meter was propitious to postpone the bearing period and growth and development of tobacco plants. It was the base of maturation endurance and could advance the tobacco leave maturation degree of all parts of tobacco plant. And it could hasten the orange tobacco leave ratio of the whole tobacco plant. It was boosted leaves unwrapping of top tobacco plant and the statuses of tobacco leaves, especially the top leaves, were significantly improved. The tissue structure of all parts leaves on tobacco plant were more loosen and the colour and luster of tobacco leaves was more vivid. The nicotinamide content in top leaves were digressive at a certain extent, on the contrary, the contents of the reductive sugar and kalium were increased at different extent. At the same time, it was benefit to play down the pesticide rudimentai of tobacco leaves and increased security of tobacco leaves.

结果表明：在浏阳烟区随着海拔高度的增加，单位面积烟叶的产量有着明显的增加，烟叶质量也有一定程度的改善；在海拔400—900m的地方进行烟叶生产，有利于延长烟株大田生育期，有效缓解浏阳烟区7、8月份的高温逼熟现象，有利于烟株的生长发育，为养好烟株的耐熟性打下良好的基础、促进各部位烟叶成熟度的提高；同时可以有效的促进烟株各部位橘黄烟叶比例的上升，对上部烟叶的开片也有着明显的促进作用，烟叶身份特别是上部烟叶的身份得到明显的改善，各部位烟叶组织结构更加疏松，烟叶色泽更加鲜亮；上部烟叶烟碱含量在一定程度上有所降低，各部位烟叶还原糖、钾含量有着不同程度的增加烟叶香气特征更加明显；香气量有一定程度的增加，吸位更加醇和、余味舒适；同时也有利于减少烟叶的农药残留量，提高烟叶的安全性。

The plates are obtained by two steps: compound felt and hot pressing shaping. The opening, mixture, carding, net-paving and needling process that affect shaping process of the blending fiber needle felt are investigated. Then it is concluded that the fiber nets from the BC-272B carding machines are uniform when the rolling speeds of licker-in, cylinder, doffer roller of the roller carding machine are 900r/min, 850r/min and 15.6r/min separately. The fiber needle felt is in a good condition when the paving nets have 8 layers, the type of the felting needle is 30, the density of needling is 1800end/m2, and the depth of needling is 3mm.

纤维复合板材分混合制毡和热压成型两步完成，分别探讨了开松、混合、梳理、铺网、针刺各工序对纤维针刺毡成型的影响，得出BC-272B罗拉梳理机的刺辊转速900r／min、锡林转速850r／min、道夫转速15.6r／min时，从梳理机下来的纤网较为均匀；铺网层数为8层、刺针型号为30、植针密度1800枚／m~2、针刺深度为3mm时，纤维针刺毡的效果较好，纤维复合针刺毡单位面积重量为200g／m~2。

The drag is a force per unit area of the layer.

拖力是流层单位面积的力。

The anticorrosion,characteristics of common materials for dyestuff equipment under different medium and different technical conditions are described.

概述了染料工业设备常用材料在不同介质和工艺条件下的耐腐蚀性能，分析、比较了不同材料制造的常压设备单位面积造价。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。