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You can fish in the open season, but not in the close season .

你可以在捕期捕鱼,但过了捕期就不行了。

A kind of real time optimizing and operation model of water-logging drainage which is suitable to be used in river network region is founded by combining with current advanced technology of forecast.

论文对国内外除排水系统研究及主要成果进行了阐述,总结了目前除排水系统研究中存在的问题,提出了平原河网地区除排水的研究方向。

In order to select the most suitable tree peony cultivars planting in the area of South Yangtse River of China,the changes of morphological,physiological and biochemical indices after submergence stress of eight cultivars were studied in this paper.

为了筛选适宜在江南地区栽培的牡丹品种,以8个盆栽牡丹品种为材料,对水胁迫下牡丹形态、生理生化变化进行了研究,初步探讨了8个品种的耐能力。

The results showed that this system could simulate waterlog caused by heavy precipitation very well.

结果表明:积预警系统能很好地模拟由于强降水而造成的积情况,模拟的积水范围和深度与实况基本吻合。

At last, we obtain that benefits of multi-annual average waterlog control in 1990-2004 is obviously higher than in 1949-1990. It proofs that benefits of waterlog control in Liaohe River Basin starts to rise obviously in the 1990s and has remarkable benefits of waterlog control.

分析结果表明,后一个时段多年平均治效益明显高于前一个时段的,说明辽河流域治效益自20世纪90年代后呈上升趋势,效益显著。

It had been shown that hybrids have significant midparent heterosis and dominant effect, hybrid growth response to submergence was controlled by the parents, but the effects of restorer lines were stronger than CMS lines, e.

对生产上主栽的三系杂交组合及其与亲本耐淹能力的关系进行了比较研究,确定杂交稻的耐淹能力的平均优势明显,显性效应为主。

Generally speaking, the drought risk of winter wheat in Anhui formed zonary distribution from east to west also, the risk were decreasing form south to north.6Compared the drought and water logging risk distribution of winter wheat in Anhui Province,the drought and water logging risk had opposite trend from south to north.

淮北地区旱多少,江淮地区旱相当,淮南地区多旱少。7安徽夏玉米旱灾风险指数分布:高值区主要分布在淮北地区西部、江淮地区东部;中值区主要位于池州市、宿州市;低值区主要分布在大别山区、淮北、淮南地区以及天长市。

Result showed that, with the controlled facility, the water storage is about 19×10^3 m^3/km of in the main drainage canal, the groundwater table in farmland is raise about 0.3 to 0.5 m and the crop water use is increased about 50 to 80 mm comparing with the non controlled main drainage canal.

结果表明,单位长度大沟年调蓄水量为1.9×10^4立方公尺/km左右,其影响范围内的农田地下水位较无控制大沟平均抬高约0.3~0.5 m,每年可增加作物对地下水的直接利用量50~80 mm,区域年农田水资源调控总量110 mm左右,约占当地年均降雨量的13%;只要控制合理、管理得当,不会因此而影响排水系统对农田渍的有效控制或降低原有排水工程的除降渍标准。

Underground Drainage can be divided into underground level and vertical drainage,waterlogged removal and regulating soaking,but the ground drainage only drains flood,can't drain waterlogged by the earthsurface accumulated water,it is finished by underground drainage.

地下排水可分为地下水平和垂直排水,除治渍,而地上排水仅排洪,不能排地表残积水之,而要由地下排水完成。

The climate resource is rich in this area, with large variation and uneven distribution; The water resource is relatively enough, but the waterlogging and flood water on lowlying land always appear at the same season, the drought and waterlogg...

主要表现为气候资源丰富,但变率较大,分布不均;水资源相对充足,但渍相随,旱并存,且旱灾害有加重的趋势,农业用水的水质劣化趋势加剧;渍地的生物资源比较丰富,但生产力低下;渍地域相对贫困人口增加,血吸虫疫区不断扩展。

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推荐网络例句

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。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?