查询词典 freshwater

Is a small freshwater alga suitable to live in an environment where both water temperature and light intensity is relative low. The optimum water temperature of 15℃ and the optimum light intensity of 35μmol/m^2s~45μmol/m^2 s are needed for photosynthesis of Batrachospermum longipedicellatum.

其光合作用的最适水温为15℃，光合作用的适宜光强为30μmol/平方公尺s~50μmol/平方公尺s，最适光强度为35μmol/平方公尺s~45μmol/平方公尺s，40μmol/平方公尺s光合速率最高峰，为其饱和光强。

But if that theory is correct then bdelloid rotifers, freshwater invertebrates that haven't had sex in at least 30 million years, should have been parasited into extinction long ago.

但是如果这个理论是正确的，那么蛭形轮虫（一种淡水无脊椎动物，它已经无性繁殖至少3000万年了）应该在很早以前就被寄生虫消灭了。

But if that theory is correct then bdelloid rotifers, freshwater invertebrates that haven't had sex in at least 30 million years, should have been parasited into extinction long ago.

但是如果这个理论是正确的，那么蛭形轮虫，这种至少已经存活了3千万年的无性繁殖的淡水无脊椎生物，应该早就因为感染寄生虫而灭绝了。

The researchers, based at Cambridge University, focused on bdelloid rotifers, female microscopic organisms that live in freshwater pools.

剑桥大学的研究者们对生活在淡水池塘中的雌性微生物蛭形轮虫进行了研究。

Bdelloid rotifers, microscopic asexual freshwater invertebrates are the ultimate escape artists, able to outpace their enemies by drying up and blowing away.

蛭形轮虫，只能在显微镜下观察的无性淡水无脊椎动物是最好的&脱身专家&，它们通过&干枯&和&随风吹走&来超越竞争对手。

Bdelloid rotifers (pronounced DELL -- oyd ROWtiff-ers) are tiny, freshwater invertebrates that have long puzzled scientists because, as completely asexual animals, they should have been extinguished by parasites and pathogens long ago in evolutionary time.

蛭形轮虫这种细小的淡水无脊动物已经困扰科学家们很长时间了，因为作为一种无性生殖动物他们在进化中早就应该因为寄生虫和病原体而灭亡了。

To explore the effects of exogenous nitrogen input on the enzyme activity of Calamagrostis angustifolia during litter decomposition in a freshwater marsh, we supplied dissolved NH4NO3 (N0:0; N1:6 g·m-2·a-1;N2:12 g·m-2·a-1) to field plots on the Sanjiang Plain and determined the enzyme activities of litter decomposition within 160 d using litter bags.

以三江平原沼泽湿地典型湿地植物小叶章枯落物为研究对象，采用分解袋法研究了不同外源氮输入(N1、 N2分别为 6 、12g·m-2·a-1)对小叶章枯落物分解过程酶活性的影响，并设置对照区（N0，0 g· m-2·a-1）进行比较。

The preliminary study suggests that nanoparticles from human samples share spectroscopic characteristics with calcified bacteria that exist in freshwater lakes.

前期研究表明来自于人体样本中的毫微粒与存在于淡水湖中的钙化细菌光学特征相似。

In this study,an experimental modelwas developed and established with freshwater crayfish Cambarus clarkii to prolif-erate White Spot Syndrome Virusin vivo.The success and reliability ofthis model was confirmed by transmission electron microscopy,dot-blotand hybridization in situ etc.

本研究在阐明WSSV对常见淡水甲壳纲动物的侵染活性的同时，成功地建立了WSSV淡水克氏螯虾体内增殖模型，并通过电镜技术、核酸探针斑点杂交与原位杂交等手段证实所建立的增殖模型的可靠性。

Freshwater prawns of the genus Macorbrachium (Crustacea: Decapoda: Caridea: Palaemonidae) constitute one of the most diverse, abundant and widespread cruatacean genera.

沼虾属Macrobrachium是一类生存环境多样，起源与分化过程尚不甚明了，分类地位具争议性的动物类群。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。