无节幼体

The free-swimming first stage of the larva of certain crustaceans, having an unsegmented body with three pairs of appendages and a single ''.'median'.''''.

无节幼体某种甲壳类动物的幼虫的能自由游泳的第一期，有一未断节的身体，三对附肢和一只中''。

The free-swimming first stage of the larva of certain crustaceans, having an unsegmented body with three pairs of appendages and a single median eye.

无节幼体某种甲壳类动物的幼虫的能自由游泳的第一期，有一未断节的身体，三对附肢和一只中眼

L , Tuandao (293.95 ind./L), Huangdao (283.7 ind./L) and Nautical School (107.23 ind./L).5 At the Nautical School Sampling Station (24 hour monitoring station), the highest average density of microzooplankton was recorded at sunset (154.91 ind./L), successively, at sunrise (146.63 ind./L) and noon (93.09 ind./L), the lowest was at midnight (77.31 ind./L).6 Protozoa and copepod nauplius were the most dominant groups , comprising more than 90% of the total abundance of microzooplankton.7 In comparison with other gulf waters in the world, densities of microzooplankton and loricate ciliates in Jiaozhou Bay were at intermediate level.

在航校昼夜监测站，小型浮游动物的平均丰度以傍晚最高，其次是黎明和正午，午夜时密度最低，分别为154.91个／升、146.63个／升、93.09个／升和77.31个／升。6、胶州湾小型浮游动物以原生动物和无节幼体为主，两者共占小型浮游动物总数的90％以上。7、与世界其它海湾水域相比，胶州湾小型浮游动物的总平均丰度和砂壳纤毛虫的丰度，处丁中等水乎。

The result shows: The nauplius eye appears at the nauplius in membrane stage.

结果表明，幼虫眼在膜内无节幼体期已具备。

PHMG content within the range of 125 mg/L did not influence the oospore hatchability of Penaeus japonicus and the content within 0.5 mg/L had no significant influence on metamorphosis rate of nauplius larva.

聚六亚甲基胍含量在125 mg/L范围内对日本对虾受精卵孵化率无影响，含量0.5 mg/L以内对无节幼体变态率无明显影响。

Neurogenesis and development of the central nervous system in the embryo stage of swimming crabs, Portunus trituberculatus, were studied by the histological method.

应用组织学方法研究三疣梭子蟹胚胎期中枢神经系统的发生和发育，光学显微镜下镜检切片，在第二期卵内无节幼体阶段开始观察到脑；第二期卵内状幼体阶段，前脑由视神经层、侧原脑和中央原脑组成，与位于食道两侧的中脑和后脑形成完整的脑。

Nauplii metamorphosed into protozoea I at salinities of 25 ppt and 30 ppt earlier than at 20 ppt and 35 ppt at temperatures of 25°C and 30°C, whereas no regularity in time length existed among salinities at 20°C.

在温 度25及30℃的情况下，无节幼体变态成蚤状幼体第一期所需时间，在盐度25及30ppt较盐度20及35ppt短；但在温度20℃的情况下，盐度对变态时间没有影响。

The results show that when the PHMB is≤16×10^(-6)μl/L, the hatching rate of zygote is no affected; when the PHMB is≤4×10^(-6)μl/L, the metamorphosing rate of nauplii is no affected.

结果显示，用PHMB对中国对虾受精卵消毒，其对孵化率无显著影响(P.05)的浓度为≤16×10^(-6)μl/L；用PHMB对中国对虾无节幼体消毒，对变态率无显著影响(P.05)的浓度为≤4×10^(-6)μl/L；并且其药效保持时间较长。

The results indicate there are different salinity tolerances during development, and following the increasing tendency as nauplii copepodites adults.

结果显示不同发育期的个体具有不同的生理耐盐范围，耐盐能力随著个体发育呈无节幼体＜桡足幼体＜成体的趋势增长。

A good result was provided for penaeid shrimp larvae fed with the nauplii of Xiechi strain.

其无节幼体投喂对虾幼体的饵料效果良好，存活率达60—70％。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。