底质

The tidal current, suspended sediment concentration and bed load grain size at Humen estuary of the Pearl River in spring tide during flood season in 2004 were observed by using ADP and traditional survey instruments.

2004年洪季大、中潮期间，用声学多普勒流速剖面仪和传统观测方法对珠江口虎门水域水流、悬沙浓度及底质粒度进行了现场多点同步观测。

A boot-type jet trenching system is adopted which is towed by the supporting ship. It is mainly used for trenching hard sandy clay at the shoal area with water depth 0.8 m to 30 m. Diameter of the cable to be buried is up to 150 mm, and the burying depth more than 2 m. This system has advantages of simple structure, high burying speed and great trenching depth.

该系统采取滑靴型式的喷冲挖沟方式，埋缆机由母船拖曳前进，主要用于水深在0.8～30 m的滩海，底质为硬砂土和红胶泥层，埋设直径小于150 mm的电缆，埋设深度大于等于2 m。

A boot-type jet trenching system is adopted which is towed by the supporting ship. It is mainly used for trenching hard sandy clay at the shoal area with water depth 0.8m to 30m. Diameter of the cable to be buried is up to 150mm, and the burying depth more than 2m. This system has advantages of simple structure, high burying speed and great trenching depth.

该系统采取滑靴型式的喷冲挖沟方式，理缆机由母船拖曳前进，主要用於水深在0.8~30m的滩海，底质为硬砂土和红胶泥层，埋设直径小於150mm的电缆，埋设深度大於等於2m。

Taiwan's coastline is 1,600 kilometers long, with complex and varied geology. The West Coast is mainly sandy-bottomed, shallow, and with moderate gradients and broad tidal belts. So there is a rich variety of shellfish available.

台湾地区海岸线总共长达一千六百多公里，海岸线不仅绵长，而且底质富於变化：西海岸多为泥沙浅滩，潮间带宽广，海底平缓，可以吃到文蛤、竹蛏、牡蛎、西施舌等样式众多的贝类。

The paper summarizes the environmental hormone behavior,source and exist in g situation of phthalic acid ester pollutants in air,water,organism and sediment.

该文叙述了环境中邻苯二甲酸酯类污染物的环境激素行为、来源及在环境空气、水体、生物、底质中的存在情况。

This product is at the micro-organisms are dormant, to preserve the stability of easily put into the water body, the dormant viable recovery and will soon collapse and the multiplier into a dominant population reproduction, the rapid decomposition of organic pollutants in water, the elimination of amino nitrogen in the water , nitroso nitrogen, hydrogen sulfide and other harmful substances, and single-cell algae into the source of nutrition, the promotion of diatoms, green algae, such as good growth, inhibit the propagation of harmful algae, play a role in the rapid fertilizer, at the same time can increase the dissolved oxygen water, purification at the end of quality, improve water quality.

本品微生物均处于休眠状态，稳定而易保存，投放到水体后，休眠活菌能很快复苏和崩解，并以倍数繁殖成优势种群，迅速分解水体中的有机污染物，消除水中氨基氮、亚硝基氮、硫化氢等有害物质，并将其转化为单细胞藻类的营养源，促进硅藻、绿藻等优良藻类的生长，抑制有害藻类的繁殖，起到迅速肥水的作用，同时能增加水体溶氧，净化底质，改善水质。

Learning Vector Quantization; Genetic Algorithm; Multibeam echo sounder ; Seafloor classification

学习向量量化；遗传算法；多波束测深系统；底质分类

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失