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Results show 1 the total water requirement of the crops in the Jinghe Watershed is 740543.20×10^4 m^3, accounting for 41.58% of the total water requirement of the region; 2 of the two major groups of crops, grain crops are higher than cash crops in water requirement quotas; and among specific crops, vegetables, melons, rice and cotton are higher and sunflower, potato and benne are lower than other crops; 3 water requirement per hectare varies from county to county with the highest being 5682m^3hm^(-2), in Jingyang County, and the lowest 4022 m^3hm^(-2) in Dingbian County, averaged to 4 583 m^3hm^(-2), but the water requirement quota of a crop does not vary with the county, so calculation of water requirement quota of a county is closely related to its cropping structure; and 4 because of serious waste of water in farming, the actual water consumption in agriculture in the region is much higher than the calculated crop water requirement.
结果表明,泾河流域农作物需水量总计740543.20万立方公尺,农作物需水占总需水量的比例较高,为41.58%。粮食作物需水定额较经济作物高;就具体作物而言,菜、瓜类、水稻、棉花等需水定额较高,向日葵、薯类、胡麻等较低。各县单位面积需水量差异较大,平均值为4583立方公尺hm^(-2);泾阳县最高,为5682立方公尺hm^(-2),定边县最低,为4022立方公尺hm^(-2)。由于事先设定大多数作物的需水定额不随县的改变而改变,因此需水量与作物结构密切相关。农业用水浪费严重,使泾河流域农作物实际用水量远高于需水量的理论计算值。
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Team handball is played on rectangular sand courts, with a goal at the end of each side.
场地:在长40公尺、宽20公尺的场地两端各设一球门,球门高2公尺、宽3公尺。
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The effects of different management patterns on root system structure and biomass of Bambusa oldhami was studied. The results are as follows: for the extensively managed Bambusa oldhami stand, the dry weight, length, surface area and volume of roots were 317.61 kghm^(-2), 45 304.91 mhm^(-2), 98.65 m^2hm^(-2), and 0.0181 m^3hm^(-2) respectively.
对不同经营方式的绿竹林根系结构和生物量分布开展了研究,结果表明:在粗放经营的绿竹林内,竹根干质量总量为317.61 kghm^(-2),竹根长度总量为45304.91 mhm^(-2),竹根表面积总量为98.65平方公尺hm^(-2),竹根体积总量为0.0181立方公尺hm^(-2);在集约经营的绿竹林内,竹根干质量总量为1333.12 kghm^(-2),竹根长度总量为143338.46 mhm^(-2),竹根表面积总量为3089.15平方公尺hm^(-2),竹根体积总量为0.5831立方公尺hm^(-2)。
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The photosynthetic rate is the highest at 40μmol/m^2s. The light intensity for photosynthesis of Batrachospermum longipedicellatum. is saturated light intensity. The light compensation points increase with the rise of water temperature. They are 4.5, 5, 5.6, 6 and 7μmol/m^2s at 5℃, 10℃, 15℃, 20℃ and 15℃ respectively.
长柄串珠藻的光补偿点随温度的升高而升高,5℃、10℃、15℃、20℃和25℃的光补偿点分别为4.5μmol/平方公尺s、5μmol/平方公尺s、5.6μmol/平方公尺s、6μmol/平方公尺s和7μmol/平方公尺s。
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Is a small freshwater alga suitable to live in an environment where both water temperature and light intensity is relative low. The optimum water temperature of 15℃ and the optimum light intensity of 35μmol/m^2s~45μmol/m^2 s are needed for photosynthesis of Batrachospermum longipedicellatum.
其光合作用的最适水温为15℃,光合作用的适宜光强为30μmol/平方公尺s~50μmol/平方公尺s,最适光强度为35μmol/平方公尺s~45μmol/平方公尺s,40μmol/平方公尺s光合速率最高峰,为其饱和光强。
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G.E.Hubb root is from 0.20mm to 0.50mm, and 95% roots, diameter is thinner than 0.40mm. The total surface areas of roots is 10139.68cm^2, and the surface areas of roots is about 2 to 3 times to soil surface areas in the surface layer. Enlacing sod concretion to soil profile of Eulaliopsis binata G.E. Hubb root and the gigantic adsorption to soil grains of root surface are the mechanism why Eulaliopsis binata G.E. Hubb can reduce null and water loss significantly. The monitoring result from 2003 to 2004 indicates that, when the gradient is 12 degrees, the runoff rate of planting Eulaliopsis binata Retz. G.E. Hubb completely after changing slope land to ladder (PECC, so as the follows is only 49.90m^3/hm^2?yr. and the soil loss rate is 155.78kg/hm^2?yr, however, the runoff rate of fanning and being not change slope land to ladder is 314.29m^3/hm^2?yr that is 6.30 times to PECC ,and the soil loss rate is 3322.50 that is 21.33 times to PECC; When the gradient is 24 degrees, the runoff rate of planting eulaliopsis binata G.E, Hubb in the ridge and border slope land after changing slope land to ladder is 248.04m^3/hm^3?yr and the soil loss rate is 612.00kg/hm^3?yr. the runoff rate of PECC is only 42.44m^3/hm^2?yr and the soil loss rate is 153.75kg/hm^2?yr, however, the runoff rate of ENC reaches to 785.73m^3/hm62?yr that is 3.17 times to PERBC and 18.52 times to PECC, and the soil lose rate reaches to 37503m^3/hm^2 yr that is 61.33 times to PERBC and 244.12 times to PECC.
蓑草根系平均直径0.20~0.50mm, 95%的根系平均直径小于0.40mm,根系总表面积10139.68cm^2,在土壤表层根系表面积高达土体表面积的2~3倍,根系表面对土壤颗粒的巨大吸附作用是蓑草显著提高土壤抗侵蚀能力的另一个重要原因。2003~2004年的监测结果表明,在12度坡度情况下,坡改梯后净作蓑草年径流量仅49.90立方公尺/hm^2,年土壤流失量为155.78kg/hm^2,而未坡改梯且农作情况下,年径流量314.29立方公尺/hm^2为前者的6.30倍,年土壤流失量3322.50Kg/hm^2为前者的21.33倍;在24度坡度情况下,坡改梯后土埂及边坡种植蓑草、坡面农作年径流量248.04立方公尺/hm^2,年土壤流失量612.00kg/hm^2,坡改梯后净作蓑草径流量42.44立方公尺/hm^2,土坡流失量l53.75kg/hm^2,而未坡改梯且农作情况下年径流量高达785.73立方公尺/hm^2,分别为处理1的3.17倍,处理2的18.52倍,年土壤流失量高达37503kg/hm^2,分别为处理1的61.33倍,处理2的244.12倍。
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Start with 1 meter, and increasing sizes by factor of 10s ,or 10 meters, 10x10 = 100 meters, 10x10x10 = 1.000 meters, 10x10x10x10 = 10.000 meters, so on, until the limit of our inmagination in direction to the macrocosmos.
由一公尺外开始,然后跳到十倍的十公尺距离处,再来是依序为一百公尺,一千公尺,十公里…等等,直到我们往外宇宙方向的可想像范围内为止。
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The results showed that a significant positive association was observed at the sampling levels of 50 m^2, 100 m^2, and 250 m^2 quadrates, and a sampling size of 100 m^2 was more suitable than that of 50 and 250 m^2 for the inter-specific association analysis.
结果表明:20个乔木种群在抽样面积分别为50、100和250平方公尺3种取样水平上均表现为显著的正关联,但取样面积为100平方公尺,比50平方公尺和250平方公尺更为合适。
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The experiments were carried out to calibrate FDR in the lab and field, and calibration equations were verified by oven-dried method for soil samples obtained by augers. The result showed that good calibrating equations with average RMSE 0.023 m^3/m^3 were fitted in the lab, but they had poor RMSE 0.066 m^3/m^3 when used in the field. Other calibrating equations with average RMSE 0.026 m^3/m^3 were also fitted by indirect field calibration method, and they had good RMSE 0.026 m^3/m^3 when used in the field.
结果表明,室内试验获得了较好的模型参数,均方根误差平均达到了0.023 立方公尺/立方公尺,但是应用到田间条件下误差很大,均方根误差平均为0.066立方公尺/立方公尺;田间条件下也间接获得了较好的模型参数,均方根误差的平均值为0.026立方公尺/立方公尺,应用于田间时测定含水量的精确度较高,均方根误差的平均值为0.026立方公尺/立方公尺。
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The grass coverage (19.21%) and biomass (44.07g/m^2) in the OTC were significantly higher than those in the control (8.04% and 18.1g/m^2, respectively), while the forbs coverage (72.8%) and biomass (210.54g/m^2) in OTC were significantly lower than those in the control (83.5% and 244.9 g/m^2, respectively).
OTC内禾草的盖度(19.21%)及生物量(44.07g/平方公尺),均显著大于对照样地(8.04%和18.1g/平方公尺),而杂类草的盖度(72.8%)及生物量(210.54g/平方公尺)均显著小于对照样地(83.5%和244.9g/平方公尺)。
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BOWERS:机械式内径千公尺,塞规,环规,通止规
12、 BOWERS 机械式内径千公尺,塞规,环规,通止规 | 13、 COVEBTRY GAUGE 测试锥度规、测试塞规、通止规、测试锥度规 | 14、 DEFELSKO 超声波厚度计,膜厚计、涂层测厚仪
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centare:一平方公尺
cental 百磅 | centare 一平方公尺 | centaur 怪物
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hectometer:一百公尺/公引
hectolitre /一百公升/ | hectometer /一百公尺/公引/ | hectometre /一百公尺/
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km kilometre:千米;千公尺
kl. kilolitre 千公升;公秉 | km. kilometre 千米;千公尺 | km?? square kilometre 千平方米;千平方公尺
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metre:公尺
随著让小人发抖的大声,直径 3 公尺 (metre) 、长度 20 公尺 (metre) 的残忍的食指下用群的边震动,使之陷入在[於] 於一刹那之内地面巫婆微小和数只. 那个是一刹那的事件. 健二们 30 名的小人们不知道发生了什麼.
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myriameter:一万公尺
myrialiter 万升 | myriameter 一万公尺 | myriametric 万公尺的
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km?? square kilometre:千平方米;千平方公尺
km. kilometre 千米;千公尺 | km?? square kilometre 千平方米;千平方公尺 | km?? cubic kilometre 千六方米;千立方公尺
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m Steeplechase:三千公尺障碍赛
400-m Hurdles .四百公尺中栏 | 3000-m Steeplechase .三千公尺障碍赛 | Decathlon .男子十项
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dekameter:十公尺
分米 ( Decimeter ) | 十公尺 ( Dekameter ) | 百公尺 ( Hectometer )
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Li estas je du metroj alta. - Li estas du metrojn alta:(他有二公尺高
Mi estas je 20-metra distanco de vi. - Mi estas 20 metrojn for de vi. (我離你 20 公尺... | Li estas je du metroj alta. - Li estas du metrojn alta. (他有二公尺高.) | Mi kuras en la arbaro. - 我在樹林裡跑...