They examined a half-million data points collected using a tool called a Secchi disk, as well as measurements of chlorophyll-a pigment produced by the plankton.
他们检查了50万个由一种被称为塞齐盘的工具所采集的数据点，并且测量了由浮游植物所产生的色素——叶绿素。
Distribution features of surface chlorophyll a were discussed according to the underway measurements of chlorophyll a conducted in the Taiwan Strait in August, 1998.
根据1998年8月台湾海峡表层温度、盐度、叶绿素a的走航式观测结果，讨论了调查期间叶绿素a的分布特征。
It is well known that the chlorophyll a is a primary pigment involved in the photosynthesis process of plants.
众所周知，叶绿素a是植物的最重要的光合作用色素。
The treatments all caused total phosphorus(TP) , total nitrogen(TN), and content of chlorophyll-a(Chl. A) in the overlying water obviously reduced.
种植沉水植物可使水体总磷、总氮、叶绿素a含量显著降低，且伊乐藻对总磷的净化效果优于菹草；
Stay-green mutations in a variety of plants have similar phenotype: delayed senescence, a block to chlorophyll degradation or delayed degradation.
许多物种的滞绿突变体具有相似的表型特征，即衰老被延缓，叶绿素不降解或降解缓慢。
The invention discloses a plant chlorophyll measuring instrument and a method thereof, which aims at solving the problems of time consuming, living plant destruction, and the like.
本发明公开了一种植物叶绿素测量仪及叶绿素测量方法。旨在克服费时、破坏植物活体等问题。
A review and summary was made of the investigation and studies on chlorophyll a and primary productivity conducted by the Chinese scientists in the Yellow Sea since the 70's.
本文是对70年代末以来我国在黄海西部海区进行的叶绿素a及初级生产力调查和研究的综述。
A review and summary was made of the investigation and studies on chlorophyll a and primary productivity conducted by the Chinese scientists in the Yellow Sea since the 70's.
本文是对70年代末以来我国在黄海西部海区进行的叶绿素a及初级生产力调查和研究的综述。
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