产卵

The anadromous form called "steelhead" migrate to the ocean, though they must return to fresh water to reproduce.

溯河型迁徙到海中生活，尽管它们需要回到淡水中产卵。

Any of various primitive elongated freshwater or anadromous fishes of the family Petromyzontidae, characteristically having a jawless sucking mouth with rasping teeth.

七鳃鳗，八目鳗一种七鳃鳗科的原始细长淡水或溯河产卵鱼，特点是长有无颌的吮吸嘴，嘴内有锉牙

Anadromous fish were intermediate to marine and freshwater fish (h=0·68 and a=11·3). Results parallel earlier comparatie summaries of allozyme ariation in marine, anadromous, and freshwater fishes and probably are attributable in part to differences in eolutionarily effectie population sizes typifying species inhabiting these realms.

与先前得到的海水鱼类、淡水鱼类、溯河产卵鱼类的等位酶结果相平行，这可能归结于这些栖息在不同水域的种类进化有效群体大小的差异。

Salmon are anadromous.

鲑是由海移栖淡水河产卵的。

Maturation feeding weevils displayed higher anemotaxis responses to -β- pinene, myrene and limonene than those of sexually matured weevils; whereas - carene, which was detected only in volatiles of trunk phloem, elicted more olfactory respones of sexually matured weevils than of maturation feeding weevils.

在华山松枝梢挥发物中含量较高的-β-蒎烯、月桂烯和柠檬烯引起补充营养期华山松木蠹象较大的趋向反应；在华山松树干韧皮部挥发物中含量较高的3--蒈烯则引起交尾产卵期的华山松木蠹象较大的趋向反应。

In the field of biology the paper dicusses mating,parasite,developing,oviposition,etc.of Aphidius gifuensis and effect on its host,also ecologically dicusses its natural enemies and effect of weather,growth of tobacco,insecticide on Aphidius gifuensis.

生物学方面主要论述了烟蚜茧蜂的交配、寄生、发育、产卵、体色、性比、越冬、成蜂寿命及其对寄主生命活动的影响：生态学方面主要论述了烟蚜茧蜂的天敌以及气候因子、烟草长势和化学农药对其的影响。

Any of various long,snakelike,scaleless marine or freshwater fishes of the order Anguilliformes or Apodes,especially Anguilla rostrata of eastern North America or A.anguilla of Europe,that lack pelvic fins and characteristically migrate from fresh water to salt water to spawn.

鳗任一种长的蛇形的无鳞海洋或淡水鱼，尤指产于北美东部的扁平鳗鲡属或欧洲的鳗属，都缺少腹鳍，并且是典型的从淡水中迁居到盐水中产卵

And fish lice, Argulus sp. Induced spawning using only photothermal control has not occurred, but GnRHa implants hae been successfully used to induce oulation and allow strip-spawning. In addition, during 1997, photothermal conditioning coupled with 100 mg GnRHa implants resulted in successful tank-spawning. During a 99-day period, eggs were collected on 64 days and lowering temperature was shown to inhibit spawning.

和 Argulus sp。，产卵的诱导采用光照控制和GnRHa注射的方法，并成功地试亲鱼排卵和进行流水孵化。1997年中，光照控制和100mg GnRHa注射所得栾成功地进行了静水孵化。

Based on the data obtained in 2001 ～ 2003 from 33 stations, the secondary production of macrobenthos from the anchovy spawning ground in the southern Yellow Sea was studied using Brey's (1990) empirical formula. The results showed that the mean abundance was 194.3 ind.

根据2001至2003年南黄海鳀鱼产卵期在鳀鱼产卵场33个站考察采集的大型底栖生物定量样品资料，利用Brey's(1990)的经验公式对调查海区进行了大型底栖生物栖息密度、生物量、次级生产力和P/B值的研究计算。

Xeuramericana cv.'Zhonglin46', Salix matsudana and Broussonetia papyrtfera, and analysis the bark inclusion of these 4 tree species.

结果表明，取食不同树种的桑天牛成虫在取食量、存活时间、产卵量和死亡雌虫体内遗卵量上有较大差异。

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。