land snail
- land snail的基本解释
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蜗牛
- 相似词
- 更多 网络例句 与land snail相关的网络例句 [注:此内容来源于网络,仅供参考]
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The land use pattern had changed by a relatively large margin in Neijiang city from 1997 to 2005. The main tendency of this change is that with remarkable reduction of cultivated land that decreased by 9936.11hm~2, unutilized land and water area, while garden land, forest land that increased by 7032.23 hm~2, grass land and building land increased notably. And during the research time, the speed of land use type change reduced from garden land, traffic land, forest land, residential areas and industrial and minings land, cultivated land, unutilized land to water area. The main trend of general dynamic degree changed from progressive increase to degression. From the analyses of land use diversion matrix, we know resulting in the quantity change of land use was that cultivated land being occupied by construction,adjustment in structure of agriculture and the implementation of the national reforesting formerly cultivated land policy in Neijiang city.
结果表明:1997~2005年间,土地利用类型发生较大幅度变化,总体上呈现耕地、未利用地、水域面积显著减小和园地、林地、牧草地、建设用地面积增大的趋势,其中耕地面积减幅最大,达9936.11hm~2,林地增幅最大,达7032.23 hm~2;土地利用类型变化速度依次为园地>交通用地>林地>耕地>居民点及工矿用地>未利用地>水域,其中园地为2.67%,水域为-0.01%,综合土地利用动态度呈现先递增后递减的趋势;从土地利用类型转移矩阵分析得出,建设用地占用耕地、农业结构内部调整、&退耕还林&是导致内江市土地利用类型数量变化的重要原因。
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This may be due to hydrolytic chelating, precipitation and the sediment or hydrobioes attachment, absorption etc. The honewort had stronger ability of accumulating La because of its large leaf surface that could attach La. The accumulating ability of snail and fish to La was relatively weaker but some organs of them had higher contents of La especially in the intestines, shell of snail, and in gill, internal organs, scales, head, bone of fish, rare in muscle. The total accumulating quantities of La in each component of simulated aquatic ecosystem were a decreasing order of: sediment >honewort>snail>fish, and the sequence of bio-concentration facter was as follows: honewort>snail>fish.
2金鱼藻对La有较强的富集能力,主要通过枝叶表面吸附、吸收而富集;螺蛳对La也有一定的富集,并主要分布于肠、壳中,螺头中积累相对较少;草鱼对La的富集能力相对较弱,进入鱼体的La主要集中在鳃、内脏、鳞及头、骨中,肌肉中积累量较少;按质量计,稀土元素La在模拟水生态系统各部分中的积累量依次为:底泥>金鱼藻>螺蛳>草鱼;各水生生物对稀土La的生物富集因子依次为:金鱼藻>螺蛳>草鱼。
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Company founder Mr. Ye Abin are famous far and near snail experts, in the early eighties him the brown clouds from Africa agate snail breeding carefully cultivate new varieties of snails experienced constant wearing twenty scientific exploration, breeding a genetically stable, succulent white as jade, individual large, fast-growing, disease less wide adaptability and high reproductive rate of the outstanding snail species, was the national counterparts as "Chinese white jade snail."
公司创建人叶阿彬先生是遐迩闻名的蜗牛专家,于八十年代初期,他从非洲褐云玛瑙蜗牛中精心选育,培养出蜗牛新品种,经历廿余戴不断地科研探索,繁育出基因稳定,肉质嫩白如玉、个体大、生长快、病害少、适应性广、繁殖率高等特点的优秀蜗牛品种,被全国同行誉为&中华白玉蜗牛&。
- 更多网络解释 与land snail相关的网络解释 [注:此内容来源于网络,仅供参考]
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land snail:的全文例句
land snail的例句: | land snail的全文例句: | land snail的相关翻译词汇:
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land snail:相关词的翻译
land snail的翻译: | land snail相关词的翻译: | 钉螺:Snail
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land snail:的例句
宗地估价:Land Appraisal | land snail的例句: | land snail的全文例句:
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land snail:的翻译
land snail的翻译: | land snail相关词的翻译: | 钉螺:Snail