查询词典 marsh fern

Provincial Development and Reform Commission, the Provincial Press and Publication Bureau, the Economic Commission Xi'an, Xi'an, Press and Publications Administration, after investigation and study after study recognizes that in today's industries are printing and packaging industries direction of development, and decided in the northern suburb of Xi'an, Xi'an to create marsh eco-park Indian Industry Base package.

省发展和改革委员会，省新闻出版局，经济委员会西安，西安，新闻出版总署，经过调查研究，研究后确认，在当今的工业印刷和包装工业的发展方向，在西安，西安北郊决定建立湿地生态公园印度工业基地包。

On the mornings that had once throbbed with the dawn chorus of scores of bird voices there was now no sound; only silence lay over the fields and woods and marsh .

那曾在每个早晨随著破晓合唱的鸟叫声已不复存在；只有寂静横躺在原野间，树林中，以及沼泽上。

Till at last, raising my head to an aperture among the leaves, I could see clear down into a little green dell beside the marsh, and closely set about with trees, where Long John Silver and another of the crew stood face to face in conversation.

最后，我抬起头来，从树叶的缝隙间望去，看到下面沼泽地旁的一块绿色草地上，高个子约翰-希尔弗和另一个船员正面对面地站在那里谈话，四周是葱绿的树木。

Crawling on all-fours, I made steadily but slowly toward them; till at last, raising my head to an aperture among the leaves, I could see clear down into a little green dell beside the marsh, and closely set about with trees, where Long John Silver and another of the crew stood face to face in conversation.

太阳直射在他们身上。西尔弗已经把他的帽子扔到了他旁边的地上，他的光滑、白皙的大脸盘正热切地闪着光，对着另一个人的脸，作出一副恳求的表情。

Crawling on all-fours, I made steadily but slowly toward them; till at last, raising my head to an aperture among the leaves, I could see clear down into a little green dell beside the marsh, and closely set about with trees, where Long John Silver and another of the crew stood face to face in conversation.

我四肢着地、缓慢而坚定地向着他们爬去，直到最后，我抬头向叶隙中望去，能够清晰地看到下面沼地旁一小块绿色的谷地；高个子约翰和另一个水手正面对面地站在那里谈话。

Carbon cycle in marsh areas is playing an important role in global carbon cycle.

湿地生态系统碳循环在全球碳循环中起着重要的作用，并对全球气候变化有着巨大的影响。

Five types of foraging habitats of Black－necked Cranes, i.e., sedge meadow, shallow water marsh, corn field, vegetable field and grassland, were identified in Caohai.

在草海的黑颈鹤越冬觅食栖息地可分为5种——莎草草甸、浅水沼泽、草地、玉米地和蔬菜地。

B An Inland Paradise for Birdwatchers Standing at the edge of an enormous marsh, a visitor is overwhelmed by the vast area of tall water plants and the abundant bird life, which reminds one of the coasts of the southeastern United States.

Words： 1，001 鸟类观察者的内陆天堂站在一片广阔的湿地的边上，参观者陶醉于这绵延的高水草和繁荣的鸟世界：此情此景令人想起美国东南部的海岸。

We watched a flock of her pigeons fleeing across a marsh, a hawk in pursuit.

我们看见她那群鸽子正飞过沼泽逃窜，被后面一只鹰追击。

Any of various slender, narrow-winged hawks of the genus Circus, such as the marsh hawk, that prey on small animals.

各种瘦长窄翅膀的、以捕食小动物为生的鹞属鹰类中的任何一种，例如丛林鹰

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。