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Terms for subject Environment containing barrier | all forms | exact matches only
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barrier beach An elongated sand or shingle bank which lies parallel to the coastline and is not submerged by the tide. If it is high enough to permit dune growth it is termed a barrier island沿岸沙滩 (一个延伸的沙滩或卵石的堤岸,平行于海岸线且不被潮水淹没。 如果它高到足够允许沙丘增长,它就被称作堰洲岛。)
barrier reef An elongated accumulation of coral lying at low-tide level parallel to the coast but separated from it by a wide and deep lagoon or strait. The coral is thought to have formed initially on a flat surface: then as the sea-level rose in post-glacial times, thereby submerging the irregular wave-cut platform, the coral growth kept pace with the rising ocean level, so creating the great thickness witnessed today in such places as the Great Barrier Reef off the East coast of Queensland, Australia. This stretches for more than 1900 km and varies in width from about 30 km to 150 km堤礁 (位于低潮水面的珊瑚堆积物,平行于海岸线且被又宽又深的泻湖或海峡分开。 珊瑚被认为最初在平面上形成:然后随着冰河期海平面的上升,不规则的波浪冲刷成的平台被淹没,珊瑚的生长和海平面的上升同步,因此造成了今天所看到的巨大的珊瑚礁,像澳大利亚昆士兰州东海岸线大堡礁。 它延伸了1900多公里,宽度从30公里到150公里不等。)
noise barrier Barriers for reducing the propagation of sound: they are widely used in industry and alongside roads and railways to shield receivers from noise sources. Barriers will not reduce the noise on the receivers side, but will increase it, unless the barrier is also covered in absorbing material隔音屏障 (为减少声音传播的屏障:它们是广泛应用于工业和公路、铁路来屏蔽噪声源的接收器。屏障将不会减少接收端的噪声,但会增加,除非屏障也覆盖了吸波材料。)
trade barrier An artificial restraint on the free exchange of goods and services between nations. The most common types of trade barriers are tariffs, quotas, and exchange control. Such obstacles to trade are usually imposed by a country that wishes to protect domestic products in their home market against foreign competition, better its terms of trade, reduce domestic unemployment, or improve its balance-of-payments position. The raising of trade barriers by one country often provokes other nations position. Generally, the effect of a trade barrier is to reduce the volume of trade while increasing the domestic price of the protected good. Thus, it results in a relatively inefficient allocation of world resources and reduces the level of total world income and production贸易壁垒 (对国家间商品和服务的自由交换设置的人为的限制。贸易壁垒最常见的类型有关税、配额和外汇管制。这种贸易障碍,通常是由希望在国内市场保护其本国产品以对付国外竞争的国家来实行的,从而改善其贸易条件,减少国内失业,或改善其国际收支平衡状况。一个国家发起的贸易壁垒常会挑起其它国家的的立场。总的来说,贸易壁垒的后果是使国内受保护商品的价格上涨的同时还会减少贸易总量。因此,它会导致全球资源的一个相对低效的分配,会减少全球总体收入和产量的水平。)