查询词典 concaveness

Power system ; wide area information ; security control ; optimal reclosing ; trajectory concaveness and convexness

电力系统；广域信息；安全控制；最佳重合闸；轨迹凸凹性

Based on the Arcview platform and compiling programs by ourselves, the DLPM of urban area of Jinan in 1998 and 2001 is established. The main conclusions are: 1 general trend of land price is reduction from central base point to urban edge, but there are different characteristics in different direction; 2 from one edge to another, land price shows low-high-low, and its sections through urban areas show normal school and deflection normal school; 3 land price evolutes with time, concaveness land price terrace changes little or gentle or protruding, and protuberant land price terrace changes little or not, price terrace or big or gentle; 4 the increasing potential of price is analyzed by the increasing rate and increasing speed of land price.

分析数字地价模型得出结论：①地价从中心基点向城市边缘总趋势是降低，但不同方向表现出不同的特点；②在贯穿市区的地价剖面中，一般表现为从一个边缘到另一个边缘的地价由低到高再到低的变化规律，由於地价剖面经过不同的市区区位，呈现出正态和偏正态的分布特点；③在时间演化上，凹性地价阶地变小或变平缓，凹性地价阶地转变为凸性地价阶地，凸性地价阶地变小或转化为非地价阶地，凸性地价阶地变大或平缓；④利用地价增值率和地价增值速度分析了地价的增值潜力。

Upstairs about 30 young staff work their sewing machines , hemming as the radio hums .

楼上，大约30名年轻的工人一边听收音机广播，一边用缝纫机卷边。

After the American Civil War (1861 -1865), some fears were expressed that the US might attempt to annex Canadian territory, and in 1867, four of the eastern provinces of Ontario, New Brunswick, Quebec and Nova Scotia became the self- governing Dominion of Canada. In 1869, the Northwest Territory, which had belonged to the Hudson's Bay Company, was bought by the government; and other provinces later joined the dominion. In 1999, Canada consisted of ten provinces, and three territories.

美国内战(1861-1865)结束后，一些人担心美国会图谋兼并加拿大领土，因此1867年四个东部省，安大略、新不伦瑞克、魁北克和新斯科舍成为自我管辖的加拿大自治领。1869年隶属于哈得逊湾公司的西北地区被政府收买；其他省也随后加入了自治领。1999年加拿大共有十个省三个地区。