基本解释：底质取样器
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Organicenrichment actuality and evaluate of the sediment in Changhu Lake;长湖底质有机物富集现状及评价
Effects of sediments nutrition condition on the growth and the photosynthesis of Hydrilla verticillata;底质营养状况对黑藻生长及光合作用的影响
Exploration of Measuring Genetic Toxicity Method of Water Quality and Sediment in Daqing Region's Trench;大庆地区主要排水干渠水质和底质遗传生物(dú)性测试的探索
Studies on the distribution of perpendicularity pollution of Cu element of sediments in Wucheng section of Ganjiang River;赣江吴城段底质Cu元素垂直污染分布研究
Spectroscopy Characterization of Humic Acids from the Sediments in Natural Waters;天然水体底质中腐植酸的光谱表征
Effects of different water depths and sediments on Potamogeton malaianus in Lake Taihu;不同水深和底质对太湖马来眼子菜(Potamogeton malaianus)生长的影响
Investigation on sediment quality of the river mouths around Bohai Bay;环渤海湾诸河口底质现状的调查研究
Water quality and sediment quality of waters near shanghai sewage outfalls;上海污水排放口水域水质和底质分析
The effect of substrate on growth of Penaeus japonicus juvenile;底质对日本对虾幼虾生长的影响
With single-factor test,the substrate preference of juvenile Chinese sturgeon Acipenser sinensis captured from Yangtze River estuary was examined in laboratory.2cm)、小砾石(直径1～2cm)、中砾石(直径4～5cm)、大砾石(直径13～15cm)4种底质类型的选择。
The experiments on juveniles selection of different substrates reveal that 92.提出一些高产措施：如优选亲蚶；高密度来卵再分地洗卵、孵化，高密度培育面盘幼虫；无“底质”采集眼点幼虫，细砂（含极少量泥质和有机质）底质培育稚蚶，加大投饵量和换水量；严格防(bìng)等。
Residues of PCBs in the lake surface sediments of Yangtze headstream were investigated.选择地处长江源头典型湖泊之一的红枫湖为试区,对该水域的14个典型采样点表层沉积物中多氯联苯(PCBs)残留量进行了调研,以揭示长江源头典型湖泊中PCBs的残留现状,以及各种同系物在湖泊底质中的分布特征。
