查询词典 meadow

The eco-toxicity of Cu, Zn, Pb, and Cd in the single form was tested with four types of soils( red loam soils, meadow brown soils, chestnut soils, and dark brown soik) and their combined effect was determined with meadow brown soils.

测定了4种土壤(红壤、草甸棕壤、暗棕壤和栗钙土)条件下，Cu、Zn、Pb和Cd单一污染对小麦种子发芽与根伸长抑制率及其复合污染效应结果表明，同一浓度下，重金属对小麦根伸长抑制率均明显大于对种子发芽抑制率。

However , people ignored reasonably utilization of mountain tall grass meadow in past and lacked scientific management for mountain meadow .

然而，长期以来，人们忽视了对山地高草草甸草地的合理利用，缺乏科学管理，经营粗放，许多适于刈割的山地高草草甸草地被用于夏秋牧场放牧利用，牧草被践踏倒伏，利用率低，浪费大，没有充分发挥其生产潜力。

For a certain sort of Colorado rodent (with, alas, a nose for prime riverfront real estate) the question of whether it is "Preble's meadow jumping mouse" or a boring old meadow jumping mouse may be a matter of life or death: local property developers are on the death side.

在科罗拉多州的"普莱宝草原跳鼠"看来，它们是否为一个独立物种可是一个关系到生存还是死亡的大问题。它们不走运的生活在主河岸的房地产区。当地居民认为这只是一种烦人的普通草原跳鼠，巴不得除之而后快。

Whatever preserves and enhances this meadow in the natural cycles of its transformation is good; what is opposed to this meadow or negates it is not good.

凡是维护和增强了这片草甸中的自然周期的转变的，就是好的；凡是阻碍或不利于这个草甸的就是不好的。

According to the valuation of 1831, there were in Concord two thousand one hundred and eleven acres, or about one seventh of the whole territory in meadow; this standing next in the list after pasturage and unimproved lands, and, judging from the returns of previous years, the meadow is not reclaimed so fast as the woods are cleared.

根据1831的评估，康科德有两千一百一十一英亩的土地，整个区域大约有七分之一处于草甸中；这些未砍伐的区域位于牧场和未耕种土地之外的田垄里，并且以前一年的结果来看，树木一旦被砍伐掉，草甸就无法再生了。

The region in the altitude f rom 4400 to 4600 meters , which is mainly covered by alpine meadow and alpine swamp meadow , is st rongly degraded by the stock raising with it s influence radius of about 24 kilometers. The influence distance perpendicular to roads is also 24 kilometers , since road const ruction accelerates human2induced destruction to vegetation. Vegetation in shade aspect is rising due to the increase in precipitation , while vegetation in sunny aspect tends to be stable or degraded because of the enhancement in sunlight . Furthermore , the vegetation coverage is influenced by the groundwater level . In near riverbed fields , where the depth of groundwater is shallow , plant s can easily grow ; while in far riverbed fields , vegetation is prone to degrade due to drainage. The radius of river influence is 24 kilometers.

海拔4400～4600m的较低海拔地带退化最强烈，主要为高寒草甸与高寒沼泽草甸受牧业影响较大；牧业影响半径为24km；道路的影响范围为24km，道路的修建加速了人类对高原植被的破坏作用；阳坡植被呈现趋于稳定和退化的趋势，阴坡植被表现为增长的趋势，降水量增加是源区植被，尤其是阴坡植被变好的重要原因，而太阳光照增强是导致阳坡干旱和植被趋于退化的潜在原因；近河床区地下水位埋深较浅，植被生长具有稳定的地下水源；在远离河床的一定区域内，地下水易于疏干，植被易于退化，河流影响范围为24km。

Alpine meadow and wetland,closely correlated with the amount of water stock in the riverhead of China,is the most important ecosystem of the Qinghai-Tibetan Plateau.This ecosystem is the primary support for the industrial and agricultural and the living using water in the middle east of China,which makes the conservation of alpine meadow and wetland in the Qinghai-Tibetan Plateau have importantly practical significance.

高寒草甸及湿地是青藏高原上最为重要的生态系统，它的状况直接关系到我国江河源头的蓄水量，也关系到我国中部和东部广大地区的工农业及人民生活用水，因此对青藏高原高寒草甸与湿地的保护具有重要的现实意义。

Alpine meadow and wetland, closely correlated with the amount of water stock in the riverhead of China, is the most important ecosystem of the Qinghai-Tibetan Plateau. This ecosystem is the primary sup port for the industrial and agricultural and the living using water in the middle east of China, which makes the conservation of alpine meadow and wetland in the Qinghai-Tibetan Plateau have importantly practical significance.

高寒草甸及湿地是青藏高原上最为重要的生态系统，它的状况直接关系到我国江河源头的蓄水量，也关系到我国中部和东部广大地区的工农业及人民生活用水，因此对青藏高原高寒草甸与湿地的保护具有重要的现实意义。

The plant community composition changed and the community coverage increased over the wetland succession from primary swamp, through swampy meadow, to meadow. The number of associated species increased, while the dominant species abundances decreased. Through succession, the content of soil organic matter and total nitrogen declined. In contrast, the soil enzyme activity of catalase, protease and invertase increased; however urase declined.

随着湿地原生沼泽向沼泽化草甸、草甸的演替，湿地植物群落盖度增加、物种组成增多，群落优势种优势度减小，伴生种数量增加，植物多样性呈增加趋势；湿地土壤有机质、全氮含量不断减少，过氧化氢酶、蛋白酶、蔗糖酶活性增加，脲酶活性降低。

He walked about the meadow, dragging one leg after the other, making the grass rustle, and watching the dust, which covered his boots. Then he strode along, trying to step on the traces of the footsteps of the mowers on the meadow; or counting his steps, calculated how many times he would have to walk from one boundary rut to another to make a verst; or cut off the flowers of wormwood growing in the rut, and crushing them in his hands, sniffed at the bitter-sweet, pungent odour.

他在草地上来回走动，慢慢地拖着两只脚，蹭得地上的草沙沙作响，眼睛盯着靴子上的尘土；他有时迈着大步，尽可能踩上割草人留下的脚印，有时数自己的脚步，计算走一俄里要经过多少两条田垄之间的距离；有时采几朵长在田垄上的苦艾花，放在手掌上揉碎，然后闻那股强烈的甘苦香味。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。