查询词典 erosion cycle

The cause of formation is the new structure rising of the earth's crust and the erosion and denudation of the external force.

形成原因是地壳的新构造抬升与外力的侵蚀、剥蚀。

Problems in China's land ecology security in China involve soil erosion, soil pollution, soil desertification, salinization, alkalin-ization, soil depauperization, etc.

我国土地生态安全方面的主要问题有水土流失、土壤污染、土地沙漠化、盐碱化、潜育化、沼泽化、贫瘠化等，围绕这些土地生态问题，我国已经制订了《环境保护法》和《土地管理法》等综合性法律，又制订了有关的专项法规。

First of all, as the forests disappeared, the propagation decreased, while some kinds of plants and animals were even close to deracination or had already died out. Next, the natural disasters, such as flood, drought, and tornado, etc. broke out more frequently and strongly. Again, without the protection by forests, soil erosion and fertility decline together with other problems appeared. Finally, forest vicissitude also had negative effect to social economy and people's lives.

首先是由于森林面积的减少，导致一些森林动植物的数量减少，濒临灭绝，甚至消失；其次，森林的变迁导致海南岛水灾、旱灾和风灾等自然灾害发生次数增加，强度加大；再次，土地失去森林的保护而引发严重的水土流失和土壤肥力下降等种种问题；最后，森林的变迁还对社会经济及人们的生活产生不利的影响。

For a long period of time, widely used in the production of components of an effective insecticide rotenone is mainly from the genus Derris root extract, collect rotenone from the root to dig down to two meters deep, the human cost of not only high-cost and easy caused by soil erosion, many of the genus Derris production has stopped growing, leading to the market with rotenone as the main active ingredient of the biological pesticide manufacturers shortage of raw material sources.

相当长一段时间，在生产上广泛使用的有效杀虫成分鱼藤酮主要是从鱼藤属植物中的根部提取，采集鱼藤酮的根要挖掘至地下达两米深，不仅人力成本耗费高，而且容易造成水土流失，不少鱼藤属植物的产区已经停止种植，导致市场上以鱼藤酮为主要活性成分的生物农药制造企业原料来源短缺。

The bridge structure suffered the moisture, frog and load attack successively in natural state, this results in concrete carbonization, reinforcing steel bar erosion, the surfer desquamate, the cross section dimension decrease, so the mechanics performance worsen, the bridge bearing capacity decreases.

在自然条件下，桥梁结构由于受到大气、水雾及外载的不断作用，引起混凝土碳化、钢筋脱钝锈蚀、构件表面剥落、截面尺寸减小，从而使混凝土结构或构件的力学性能恶化，使用性能降低，桥梁承载能力减小，严重的甚至引起人民生命财产的重大损失。

The circumstances under oil wells have been much more complex than ever . Requests on resistance of erosion destructibility of sealing interfaces that related to sealing up and cementing exercises in petroleum engineering are more and more of rigidi ty .

目前国内许多油田已进入开发后期，开采强度不断增大，井下情况更加复杂，对于石油工程中的固井和挤堵作业涉及的封固界面的抗冲蚀破坏性能要求越来越高，迫切需要解决影响界面胶结质量的各种问题，特别是流体渗流条件下的界面胶结强度的建立和保持问题。

Perhaps because they worship vivo red blood flowing in body, they have relatively stronger resistance against the erosion of the devildom.

也许因为她们崇拜流淌在体内的红色血液，对于魔界的侵蚀有比较强的耐性。

Diapir bodies are distributed in the lower slope of the abandoned delta lobe in the north of the Yellow River delta, the formation mechanism of which is related to the marine erosion and greatly different from that in the Mississippi delta.

黄河三角洲刺穿体分布在废弃三角洲叶瓣水下斜坡的下部，成因与密西西比三角洲有很大差别，其形成与软弱层变形和海洋侵蚀密切相关。

After the river channel shifted, the discharging center of pressure was generated from the seabed erosion, on which the diapir came into being.

黄河口摆动后，海底快速冲刷，在最大冲刷中心也是最大压力释放中心刺穿体形成，随着海洋侵蚀速率减缓，刺穿作用将逐渐减弱，最终将被冲刷消亡。

Finally, the erosion and dilation operators are used to smooth the edges of the segmented regions.

最后，利用形态学的有关算法对分割区域的边缘进行平滑。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48