堤

Historical records and previous studies have indicated that the outer part of the Northern Jiangsu plain was formed from marine sedimentation during a Holocene high sea level period at 5000 a BP, as defined by a series of abandoned shell beach ridges.

本论文研究的是介于古贝壳堤西侧与湖泊群东侧之间的平原成因。2004年夏在苏北平原低洼处，距现代海岸120km的宝应县望直港进行了钻孔取样(BY1，33o14'21N， 119o22'41''E)，钻孔进深144.98 m，实取沉积柱为96.81 m。

That means continuing to rebuild hundreds of miles of levees and floodwalls around New Orleans, and working to strengthen the wetlands and barrier islands that are the Gulf Coast's first line of defense.

这就意味着要继续重建环绕新奥尔良几百公里的洪堤和防洪墙，并且我们需要致力加强湿地和珊瑚岛的作用。它们是保护墨西哥沿岸地区的一线屏障。

Along the causeway leading to the enormous entrance gate are balustrades shaped as giant serpents, which are believed to represent emblems of cosmic fertility.

沿着堤道即可进入蛇形栏杆的巨型门入口，该蛇形图绘象征着生生不息的力量。而庙宇是由平台和具有3个尖顶建筑物和5个塔状的建筑物所构成的。

And it has been applied by many countries. The research on the charmfered breakwaters is more focused on the impulsating wave force on it and less on the breaking wave force.

但以往 关于削角堤波浪力的研究主要集中于不破碎波的作用力，破碎波作用力所进行的工作不多，需要积累更多的资料。

On the contrary, there havn't much change for pressure decreasing on the toe of breakwaters.

波力与力矩之消减率随著相对波高的增大而增加，在本文实验条件下，堤前为冲击波作用下其消减率分别可达37.4%及34.4%。

A directional spectrum of the reflection coefficients is suggested and an empirical formula of the directional spectrum of the reflection coefficients for slope breakwaters are given by the model tests.

通过分析研究，提出了波浪场反射系数方向谱的概念，并由模型试验结果给出了斜坡堤前反射系数方向谱的经验公式。

Contrapose to the different cofferdams which affecting factors are different, several methods are adopted. It gives a detailed illustration on construction technique and construction technics. Gives a detailed analysis on several crucial issues which emerged when geosynthetics was used in the engineering, and gives the causation and mechanism about how the problems emerged, and then, gives the solution and advice. The several crucial issues is: the choose and construction of geocomposites; the setting and closure of cofferdams; the kinds and forms of breakages of geosynthetical dyke.

针对对工程的各作业面不同的施工条件，工程采用了几种不同的施工方法，论文对典型的施工方法和施工工艺进行了详细的说明，并对土工合成材料在该工程应用过程中出现的几个有重要影响的问题，例如土工织物滤布的选择和施工、龙口的设置与合龙、堤心充砂袋体破坏形式的种类与解决作了细致的分析，给出了问题发生的原因和机理，并给出了解决方案和建议。

The river bank soil nature and riverbed depth are two important factors acting on groundwater.

河岸土壤性质及河弘深度是堤内地下水的两个重要影响因素。

At this point in the embankments go, you will be amazed by the immediate landscape, Shen Chi thrilled.

此时走在堤上，你会被眼前的景色所惊叹，心醉神驰。

Located at the west end of Bai Causeway, this cement terracebounded by water on three sides is one of the traditional places toview the West Lake, especially on an autumn night with a fullmoon.

这块水泥台地位于白堤的西端，三面环水，是传统的观赏西湖的地点之一，尤其在满月的秋夜。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。