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natural barrier中文是什么意思

发音:  
用"natural barrier"造句"natural barrier"怎么读"natural barrier" in a sentence

中文翻译手机手机版

  • 天然堤
  • 天然屏障
  • 自然障碍

例句与用法

  • The last great natural barrier in western germany had been crossed .
    德国西部最后一个天堑就这样越过了。
  • Healthy, skin, mucous membranes, and cilia are natural barriers to many viruses .
    健康的皮肤,粘膜和纤毛是许多病毒的天然屏障。
  • The cable system is ideal for spanning natural barriers of wide rivers, deep valleys, or ravines .
    这种钢索体系是跨越宽河道、深丘谷或深山谷天然障碍物的理想体系。
  • South there isyuhua natural barrier ,
    内有藏兵洞
  • The sahara desert is a natural barrier between north and central africa
    撒哈拉沙漠是北非与中非之间的天然屏障。
  • The mountains on both sides are natural barriers embracing a naval base inside
    它就像一座天然的屏障,将军港环抱在臂弯之中。
  • Transdermal patches ( which rely on absorption through the skin ) for nicotine delivery have become a mainstay for smoking cessation programs ; however , they have not been a widely effective delivery mechanism for many drugs because the skin acts as a natural barrier
    用于尼古丁给药的透皮贴剂(依赖于皮肤吸收)已经成为了戒烟治疗的主要力量;但是,由于皮肤的天然屏障作用,该项技术没有广泛应用于其它药物的有效施药。
  • According to the abundance well logging , mud logging and core analysis data , gaotaizi reservoir has been classified into four sand group with the principle of cycle comparison and classified control . based on the detailed study of lithologic character , sedimentary structure , paleontologic fossils , depositional sequence , rock association and logging data , the microfacies of the studied area are divided into such seven types : subaqueous distributary channel microfacies ; river mouth bar microfacies ; subaqueous interdistributary channel microfacies ; subaqueous crevasse channel microfacies ; subaqueous natural barrier microfacies ; distal bar microfacies ; delta front sheet sand microfacies . the characteristic of each sedimentary microfacies are described detailedly
    通过研究大量测井、录井资料和岩芯资料,依据“旋回对比,分级控制”的原则,把研究区高台子油层划分为g 、 g 、 g 、 g四个砂层组。通过对研究区岩性、沉积构造、古生物、沉积序列、岩石组合及测井曲线特征进行研究的基础上,认为研究区高台子油层属于三角洲前缘亚相沉积,并将研究区沉积微相划分为:水下分流河道、河口坝、水下分流河道间、水下决口扇、水下天然堤、远砂坝、席状砂等七种微相类型。
  • On the basis of the analysis on the yangtze vole ' s disaster history and condition in dongting lake area , the influence of the lake beach ' s environmental evolution on the vole disaster is studicd in this paper . the rise of low - middle - level beach area causes the vole ' s population explosion , the reduction of high - level beach area forces the voles into the farmland during the flood season , and the emergence period ' s continual increase extends the vole ' s habitat areas and forces them to migrate into the farmland . the discarded dike provides a rest place halfway for the voles , which escape the flood , and the natural enemies of the voles , which are a natural barrier against the vole ' s population expansion , decreases . according to this study , the conclusions are put for ward as follows : after three - gorge project ' s construction it will produce great influences on the beach evolution in dongting lake area , leading to the changes of the vole ' s ecological environment situation and resulting in the vole ' s population changes which deserves attention
    在分析洞庭湖区东方田鼠暴发成灾史及灾情的基础上,研究了洞庭湖区洲滩演变对东方田鼠暴发成灾的影响.研究认为,中低位洲滩出露面积不断增大使东方田鼠种群迅速膨胀,高位洲滩出露面积减小造成汛期东方田鼠大量向垸内农田迁移;湖区洲滩冬春季连续出露天数增加延长了东方田鼠的繁殖期;汛期洪峰水位增高,洲滩大面积淹没迫使东方田鼠大量迁向垸内;湖内废弃湖堤为东方田鼠逃避洪水提供了中途休养之地;洲滩地抑制东方田鼠种群膨胀的天敌数量已大大减少.据此,本文指出,三峡工程建成后将对洞庭湖区洲滩演变产生重大影响,因而将改变东方田鼠种群生态环境条件,引起种群动态变化,值得注意
用"natural barrier"造句  

百科解释

The most common use of the term "natural barrier" is in geography, where it refers to a naturally occurring obstacle to movement, especially of people and especially at modest technological levels.
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