查询词典 bivalve

Base on content of chlorophyll a and feeding type of fish and shellfish a food web methods was designed to control eutrophilication. The native freshwater bivalve,Anodonta woodiana, was selected as a filter to remove the algae in the water. The result is quite satisfied and promising.

本研究以水中叶绿素a浓度为基础，鱼类食性为辅，发现使用本土种且具有经济价值之淡水圆蚌，来作为滤除水中藻类的生态方法颇具可行性，利用藻类吸收营养盐、圆蚌食用藻类、再将圆蚌移除之方式而达到降低水库营养盐能量的目的。

For research of bivalve's effect on marine plankton community structure, we conducted Aug.—Dec. 1996 experiment to study the two bivalves' feeding selectivity and their filter－feeding rates. For observing the feeding selectivity, Chlorella sp., Chaetoceros muelleri, Lermmerman, Nitzschia closterium and Pyramidomonas sp.

于1996年8—12月，分别从青岛海洋大学太平角实验基地和胶南市水产养殖研究所采集海湾扇贝和太平洋牡蛎，采用室内实验的方法，比较研究了不同规格的两种贝类对4种不同大小藻类的选择性及水温对其滤除率的影响。

Any of various marine gastropod mollusks, chiefly of the genus Urosalpinx, that bore holes into the shells of bivalve mollusks.

海洋腹足动物海洋腹足纲软体动物，主要指在双壳类软体动物的贝壳上钻孔的骨螺属。

Any of various marine gastropod mollusks, chiefly of the genus Urosalpinx, that bore holes into the shells of bivalve mollusks.

海洋腹足纲软体动物，主要指在双壳类软体动物的贝壳上钻孔的骨螺属。

Any of various marine gastropod mollusk s, chiefly of the genus Urosalpinx, that bore holes into the shells of bivalve mollusk s.

海洋腹足纲软体动物，主要指在双壳类软体动物的贝壳上钻孔的骨螺属。

A knoblike protuberance arising from a surface, as the prominence near the hinge of a bivalve shell or the projection at the scale tip of a seed-bearing cone.

圆形隆起在一个表面突起的圆形装饰物似的隆起，如在双壳贝类贝壳边缘附近的突起或在含种子的球果顶端的突起

A knoblike protuberance arising from a surface, as the prom nce near the hinge of a bivalve shell or the projection at the scale tip of a seed - bearing cone.

圆形 隆起在一个表面突起的圆形装饰物似的隆起，如在双壳贝类贝壳边缘附近的突起或在含种子的球果顶端的突起

Any of various usually burrowing marine and freshwater bivalve mollusks of the class Pelecypoda, including members of the genera Venus and Mya, many of which are edible.

蛤，蛤蜊一种双壳纲通常穴居的海洋及淡水双瓣软体动物，包括帘蛤属和海螂属的成员，其中许多可食用

Any of several marine bivalve mollusks,especially the edible members of the family Mytilidae and in particular Mytilus edulis,a blue - black species raised commercially in Europe.

贻贝一种海产双壳软体动物，特别是贻贝科中可食的可食贻贝(一种在欧洲养殖的黑蓝色物种)。常会着在岸石表面或者船侧面

Nuclera DNA contents quantified analysis The nuclear DNA content of 38 bivalve species were quantified using flow cytometry with two internal reference standards, chicken red blood cells and gill cells of Mytilus edulis.

核DNA定量分析以鸡血红细胞和贻贝鳃丝细胞为内标，运用流式细胞仪测定了38种贝类的核DNA含量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。