Though environmental factors affecting the upstream migration of eels in Chang Xing island,Heng Sha island and Xiao Yang mountain,studies were conducted from January to May in 2007.
长江口附近潮汐为半月潮,每月有两次涨落潮,鳗苗溯河量与潮汐周期呈现一定的节律性,每月有两次鳗苗峰值。
Migrating up rivers from the sea to breed in fresh water. Used of fish.
溯河产卵的从海洋向上游到河流中，并在淡水中产卵
On the problems of spawing ground, spaw-ing period of Japanese eel and the time of upsream migration of glass eel are also discussed.
最后就鳗鱼的产卵场、产卵期及白仔鳗溯河期问题进行了讨论。
The People's Republic of China enjoys the primary interests in the anadromous stocks that originate in its rivers.
中华人民共和国对源自本国河流的溯河产卵种群，享有主要利益。
A young Atlantic salmon on its first return from the sea to fresh or brackish waters.
溯河产卵时期的鲑鱼第一次从海中返回淡水或微咸的水中的幼小的大西洋鲑鱼
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
Salmon are anadromous.
鲑是由海移栖淡水河产卵的。
We traced the river to its source.
我们溯河而上直到它的源头。
Ecology and resource on the upstream migration elvers of Japanese eel ( Anguilla Japonica ) in coastal waters of the Yellow Sea
辽宁黄海沿岸鳗苗的溯河生态与资源
apoor, good, etc layer
产卵少、 多...的鸡.
Products Quality Back Traceability Management in Production Process;
生产过程中的产品质量可追溯性管理
up a lazy river; lazy white clouds; at a lazy pace.
沿着缓慢的河流上溯；悠闲的白云；以悠闲的步伐。
Its galleys could have penetrated up the rivers to the heart of Russia.
它的大木船溯河而上可以深入俄罗斯的腹地。
PRELIMINARY STUDY ON THE FEEDING HABIT OF THE UPSTREAM MIGRATORY ELVER OF JAPANESE EEL(ANGUILLA JAPONICA) IN THE ESTUARY OF NORTHERN YELLOW SEA,CHINA
辽东半岛(黄海北部)溯河鳗苗食性的初步研究
Counting method of upstream juvenile Ayu(Plecoglossus altivelis) by acoustic camera
基于声学摄像仪的溯河洄游幼香鱼计数
a member of the sex that produces ova or bears young.
产卵或产仔的个体.
Research on Product Tracking and Tracing Based on Batch Management;
基于批次管理的产品追踪溯源的研究
Determination of the Pork Safety Production Traceability System’s Information Based on HACCP
基于HACCP的猪肉安全生产可追溯系统溯源信息的确定
Research of Traceability System in the Pork Safety Production Chain
猪肉安全生产全程可追溯系统的研究