查询词典 water area

Plastic film is a modernization planting technique in droughty and semiarid area, it is adapted to wheat, cootten, corn, peanut and so on. Plastic film can save water, protract crop's vegetal time, increase production.

地膜覆膜是在干旱、半干旱地区推广使用的一种现代化种植工艺，适用于小麦、棉花、玉米和花生等农作物，能够达到节水、延长作物的生长期、增产等目的。

The Lake area in Jianghan Plain is one of the most ecotypically fragile areas in Yangtse Valley, and here there are four main ecological problems: frequent flood, silt and sand that make the lake become a swamp, water pollution and eutrophication, and the schistosome.

江汉平原湖区是长江流域生态环境最脆弱的地区之一，洪涝灾害严重、泥沙淤积和沼泽化现象普遍、湖泊水体污染与富营养化问题突出、血吸虫未得到根治等是该区目前存在的主要生态环境问题。

But high grade wheat must undertake according to climate and edaphic condition area is changed cultivate, dimensions turns production, have special demand to the administrative condition such as fat water.

但是优质麦必须按照气候和土壤条件进行区域化种植、规模化生产，并对肥水等治理条件有非凡要求。

The mass transfer limitation in uptake of alkane was confirmed from the observation that interfacial area of eicosane with water dominates the growth rate of this strain.

烃与水相的界面面积是细菌生长重要的影响因素，说明传质限制的存在。

In the high-speed steel with hard temper by dipping in water, rupture the gap that the process includes initiative carbide crackle to cause appears, or cause as a result of martensite matrix organization in area of crackle endmost flexibility decrease get together force arises.

在淬硬的高速钢中，断裂过程包括起始碳化物裂纹引起的缝隙出现，或裂纹末端的弹性区中由于马氏体基体组织造成的减聚力产生。

Total biomass, root morphological index, root activity and the amount of xylem sap excaudate were measured. Results showed that under non-water stress conditions, NH4+-N supply increased the average diameter of rice roots and accumulation of shoot biomass, while NO3--N increased total root absorption area and biomass accumulation in roots.

结果表明，正常水分条件下，NH4+-N促进水稻根系平均直径增大，有利于水稻地上部物质累积；NO3--N则使水稻根系总吸收面积增大，促进根系物质累积；NH4+-N/NO3--N为5/5处理的水稻活跃吸收面积最大，活跃吸收面积比亦最高。

The article is decided through the analysis area society, economy grows the current situation to reach on the west basically restrict an element, research thinks low-level, socioeconomy develops industrial structure backward, city changes the standard process shortage of natural resources of slow, water and zoology environment are to bring about benefit of zoology economy system flimsily low, restrict the main factor that this division can develop continuously.

本文通过分析定西地区社会、经济发展现状及主要制约因素，研究认为产业结构低水平、社会经济发展水平落后、城市化进程缓慢、水资源短缺与生态环境脆弱是导致生态经济系统效益低下，制约本区可持续发展的主要因素。

The principle of preparation for white carbon black is described, the influence of the concentration of fluosilicic acid, the dripping velocity of ammonia water, the reaction temperature and the curing time on the specific surface area of white carbon black are studied.

论述了白炭黑的制备原理，研究了氟硅酸浓度，氨水滴加速率，反应温度，陈化时间对白炭黑比表面积的影响。

This typical water logging land distributes in the slope farmland of black soil fragmentarily, which unit area was about 10~900a and the resistance of soil to drought and logging was weak.

尿炕地单块面积约0.67～60hm~2，零星分布在大面积的黑土坡耕地中，总面积约占耕地总面积的4％，其耕层土壤抗干旱和抗涝渍的缓冲能力均较低。

Be in carry Cheng Ganggang to announce to hold water " astral Cheng hotel is allied " after shaking industry, home is added fast the fastest economy hotel is high-key also 7 days yesterday announce, establish economy of brand of domestic head home hotel to cross area alliance --" astral month is allied ", those who aim to attract more to have certain dimensions is medium economy of essay card chain hotel, induct passenger source jointly.

就在携程刚刚宣布成立&星程酒店联盟&震动业界后，国内增速最快的经济型酒店7天昨天也高调宣布，成立国内首家品牌经济型酒店跨区域联盟——&星月联盟&，旨在吸引更多具有一定规模的中小品牌连锁经济型酒店，共同吸纳客源。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。