查询词典 zone

Most removal of chemical and microbiological constituents occurs in the top 2 m of the vadose zone, biological breakdown of organics, nitrification, and denitrification occur in the unsaturated zone and in the aquifer.

大部分的用化学和微生物去除发生在最上层两米的渗流区域。生物学的有机分解，硝化和反硝化作用则发生在未饱和区域和含水层。

The dissertation modifies the model of Holdridge's indexes of lifezone according to the features of the ecological climate of Xinjiang. The influence of the variation of vegetation caused by the climate variation of Xinjiang in recent decades is also analyzed. In recent 40 years, the type of life zone hasn't changed, the area and number of patch changed only. The diversity changed but not too much..That is, diversity of life zone changed in little range, the whole entiroment is still be a rather stable state, whill be goo for desertation expand contrandictorily.

根据新疆生态气候特征和生物地理规律对Holdridge生命地带分类模型进行修正，分析新疆近几十年来气候变化所引起的植被变化对于新疆土地荒漠化的影响。40多年来，新疆生命地带的类型数量并没有产生变化，只是各类型的面积和斑块数的变化，多样性有所波动，但是波动不大，也就是说生命地带多样性的震荡幅度不大，整个生态环境处于一种相对稳定的状态，这种稳定的生态环境状态有利于荒漠化的逆向发展； 7。

The result pointed out that the vertical distribution of foliage for each species was different,however,generally speaking,the foliage in upper crown (0.3CL) for broad-leaved species in natural secondary forest took a small percentage,about 10%;in middle or middle lower of the crown(0.4CL to 0.8CL) the branches here took the majority percentage of whole foliage,almost 60%to 75%;but in lower crown(0.8CL),there was about 10%of whole foliage.(5)The interspecies competition of trees in secondary forest was expressed by Hegyi competitioin index,and the active competitor was calculated by the competition zone radius and the tree position,DBH,and distance in the zone,it was not all competitors in tranditional calculation.The study introduced crown area overlap index to describe the crown competition between subject tree and its competitors,furthermore,the crown area was classified into 5 levels with a method of equal crown projection area,therefor,the resulting crown area overlap index showed more realities of existing stand conditons.(6)Based on the theoretics of multiply divide,the spatial strcture optimizing model of secondary forest stand selective thinning was developed by diversity mingling,aggregation index,competition index and crown area overlap index,also designed 10 constraint conditions which were related to forestry meanings,the objective function was solved by the implicit enumeration method with LINGO 9.0,using 0-1 integer programming.

并且得出，每个树种在树冠内相对高度上的叶量的垂直分布是不同的，天然次生林阔叶树种的叶量在树冠的上部(0.3CL以下)所占比例很小，约占10%左右；在树冠的中部以及中下部(0.4CL～0.8CL)，叶量所占比例最大，几乎集中了整个树冠60%～75%的叶量；而在树冠的下部(0.8CL以下)，几乎占很少的叶量，大约10%左右。5、采用Hegyi竞争指数来表现次生林内林木的竞争关系，并且根据竞争圈的大小和林木在竞争圈内的分布位置、大小与距离来计算有效的竞争木，并不是传统意义上的全部竞争木；本研究提出用树冠叠加指数来表示林木与周围树木的树冠竞争情况，并采用等树冠投影面积法把树冠分为5级，这样计算的树冠叠加指数更加与现实林分相符。6、本研究基于乘除法的思想，用多样性混交度、聚集指数、竞争指数和树冠叠加指数构建了天然次生林择伐空间优化模型，设计了10个与林学意义相一致的约束条件，并采用0-1整数规划的思路，在LINGO9.0软件中使用了隐枚举法对目标函数求得最优解。7、以M702标准地为应用实例，具体计算出了每株采伐木，经过择伐后，目标函数值按模型设计的要求发生了极大的改变，增加了5倍多，说明了最后这个解的优良性，满足了设计的要求。

This ablates a central, steepened zone for near correction, and a peripheral zone targeted for distance.

这种技术为术后的视近能力在角膜中央区域切削比较陡峭，而在角膜周边区域的切削是为取得视远能力。

The corrosion resistance of chloride ion for concrete admixed with fly ash and slag is tested,and the corrosive surroundings of steel reinforcement concrete in splashing marine zone and fluctuating water level zone in the south of China are simulated.

东南沿海的海工钢筋混凝土结构物破坏的主要原因，是海水中氯离子对结构物的侵蚀；北方则是结构物受冻融破坏和氯离子侵蚀[1] 。

Experiment results show that though the grains of the heat-affected zone are seriously coarsened due to the effect of welding thermal cycle, there is no softened zone and the strength of the welded joint doesn′t decrease because the transformed microstructure is different from the original one.

结果表明：经过焊接热循环的作用，虽然热影响区的晶粒明显粗化，但由于所获得的二次组织形态与钢筋原始组织不同，热影响区未发生软化，也不存在焊接接头强度下降的问题。

Experiment results show that though the grains of the heat-affected zone were seriously coarsened due to the effect of welding thermal cycle, there is no softened zone and the strength of the welded joint doesn't decrease because the transformed microstructure is different from the original microstructure of the rebar.

结果表明：经过焊接热循环的作用，虽然热影响区晶粒明显粗化，但由于所获得的二次组织形态与钢筋原始组织不同，热影响区不发生软化，也不存在焊接接头强度下降问题。

The respected teacher who protected four students using his body but himself died finally; the female teacher who convoyed the students to the safety zone and then went back to the classroom to find the losing students, but she was buried under the building which was broken down suddenly; a little strong boy names Lanxin gave a military-like salute to the soldiers when he was rescued from the debris; the injured survivors don't want to be sent to the safety place but to leave to help any others; the most loved soldiers who rescued two hundreds victims after climbing two mountains to the quake zone tired and hungry, but they refused to accept any food and water that the victims sent to them; an old grandma who was suffered in the Tangshan earthquake donated half of her whole family's cost of living and several quilts etc.

用自己的身躯护住四位学生而牺牲的敬爱的老师；将大部分学生安全转移后发现砂了两位学生又重返教室寻找而被突如其来的楼房倒塌掩埋的女老师；从瓦砾中救出来向武警官兵敬了一个军礼的坚强的兰星小朋友；被救出来后不愿意离开，带着伤痛留下来继续营救其他人的受难群众；在饥渴中翻越两座大山营救了两百多名灾民而不喝灾民一滴水、不吃灾民一口饭的最可爱的武警战士

London Strech Zone: London also is in the stretch zone, as its many derailing tube trains attest.

伦敦延伸带：伦敦也是处于延伸带内，这已被许多出轨的地铁火车所证实。

If the tectonic uplift is not considered, the relief of Dabie orogen will reach at least 3km in Late-Cretaceous. As to the value of the relief reduction factor in Dabie orogen at 90Ma, the largest value appeared in northeast region, followed consecutively by the core and southeast Tanlu fault zone, with the smalleast value appeared in northwest and southwest region. The results reflect the strong uplift difference between core and North Huaiyang flank in Dabie orogen during doming extension period. Relief in the core region and southeast Tanlu fault zone is higher than those in the peripheral regions, northwest and southwest flanks are more stable than other regions.

如果不考虑构造抬升，大别造山带在晚白垩世地形起伏至少可达3km.90Ma时大别造山带地形起伏变化率在空间上呈现如下特征：东北区块最大，热窿核部其次，东南郯庐断裂区块再次，西北、西南区块最小，反映大别造山带热窿伸展期，核部与北淮阳翼之间强烈差异隆升，核部地形和东南郯庐断裂区块起伏高于周边地区，西北、西南两个翼部比其他地区稳定。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。