面积单位

The fractional change in length or area or volume per unit change in temperature at a given constant pressure.

在恒定压力下长度或面积或体积的微小变化和单位温度变化的比值。

Using JIP-test, the difference of chlorophyll a fluorescence parameters between the two cultivars was compared in 4 treatments: shaded (40% of natural light intensity) 15 d, unshaded 15 d, shaded 30d and unshaded 30 d.

品种间最大光化学效率差异不大，但99-8的PI（以吸收光能为基础的性能指数）和PI（以单位面积为基础的性能指数）在两不同光照条件下均明显高于黑又亮。

The Acaroid species number in CWD, the individual number, Simpson index and the evenness index increase gradually with the increasing of CWD ages.

随着距倒木年龄的增长，倒木Gap中螨类的种类数、单位面积的个体数、Simpson多样性指数及均匀度指数均逐渐增加。

Microtopography of diaspore was investigated using atomic force microscope and scanning electron microscope. AFM was used as well to measure the adhesional energy per area and surface force on the diaspore surface in the absence and presence of collector.

采用扫描电子显微镜和原子力显微镜分析了一水硬铝石的表面形貌，并利用原子力显微镜对捕收剂作用前后一水硬铝石的单位面积粘附能进行了定量分析。

Agaricus bisporus is a mushroom whose cultivated scale,total production and production of unit cultivated area is the largest in the world.

双孢蘑菇是栽培规模最大，世界总产量和单位栽培面积产量最高的食用菌。

It is found that generally the bigger the cities, the higher the average per capita GDP and the average output of per square kilometers of a city, among which the cities with a population from 1 million to 2 millions have the largest agglomerative economy.

研究发现，基本上随着城市规模等级的提高，以人均国内生产总值衡量的城市第一经济效率和以单位面积产出衡量的城市第二经济效率都呈增加趋势，以100～200万特大城市经济效益最好。

The choiceness varieties of Canarium album were tested in three different places of Guangdong. The study researched the 3-4a trials after engrafting, the results were as follows:(1) The results of variance anaylsis indicated that there were highly significant differences in yield per plant and yield per crown projection area among clones, and the height, stem diameter and crown side were highly significant in some test sites. It showed that genetic diversity existed in yield per plant among clones, and selecting high yield clones were effective.

在高州市大坡镇、古丁镇以及茂名市八一林场三个试点开展橄榄优良品系扩大试验，嫁接后第3年及4年的结实及生长结果如下：（1）方差分析结果，无性系间单株产果量、单位树冠投影面积产果量均达极显著差异水平，树高、径粗和冠幅在有的试点达极显著差异、有的试点无显著差异，表明无性系间结实存在着真实的遗传差异，通过无性系测定选择的高产无性系有效。

Result The dust-retention amounts per unit area and the dust-retention amounts per plant of different tree species had bigger difference. Among trees, the dust-retention abilities of Ligustrum lucidum, Platycladus orientalis, Cedrus deodare, Platanus hispauiea anti Spohora japonica were stronger. Among shrubs, the dust-retention abilities of Viburnum odoratissimum, Pittosporum tobira, Euonymus japonicus and Lagerstroemia indica were stronger.

结果］不同树种的单位面积滞尘量、单株树木滞尘量均存在较大差异，乔木中，以女贞、侧柏、雪松、悬铃木和国槐的滞尘能力较强；灌木中，以珊瑚树、海桐、大叶黄杨和紫薇等的滞尘能力较强。

Pseudoverticillata, but there was no significant change in Celtis wightii. There was no significant change in leaf area specific hydraulic conductivity K(subscript l between the two seasons in all the three species, which may caused by the adjustment in hydraulic architecture through partial loss of leaves during the dry season. In the dry season, maximum carbon assimilate rate A(subscript max was significantly lower than that of the wet season in all the three species.

除油朴的枝条边材比导率K(下标 s在旱季和雨季没有显著性差异外，尖叶闭花木和轮叶戟的K在旱季都有显著的降低；而枝条的叶比导率K(下标 l三树种在两个季节间均无显著变化。K在旱季没有显著性降低，可能是常绿树种在旱季通过脱落部分叶片以调整其水力结构来保持较高的单位叶面积的水分供应。

Tissue composition analysis, nutrient enrichment and starvation treatments, bioassay and in situ extracellular alkaline phosphatase activity determination showed that growth of Sargassum duplicatum, Codium edule and Ulva latuca were limited by phosphorus during the early growth period while nitrogen during the fast growth period. Growth of Enteromorpha linza, Gracilaria coronopifolia and Laurencia papillosa were limited by phosphorus.

南湾及眺石海水优养化可能是造成大型海藻单位面积生物量明显增加的原因，藻体营养分析、室内营养盐添加与不添加处理、bioassay及insitu 细胞外磷酸分解酵素活性证明重缘叶马尾藻、食用松藻及大石莼的营养盐限制因子在初期是磷而快速生长期是氮而浒苔、伞房龙须菜及乳头凹顶藻是磷。

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。