为什么白鲟不能人工繁殖？
动物相当稀有。需要通过人工繁殖。
我们成功突破了海月水母的人工繁殖难关。
We successfully broke-through the difficulty of artificial propagation of Aurelia.
石首鱼科鱼类已成为人工繁殖和育苗的主要对象。
The species of the family Sciaenidae are the major fish in the artificial propagation and breeding.
只有中国人成功地进行了人工繁殖和哺育大熊猫。
Only the Chinese have successfully bred pandas and raised their babies in captivity.
文本报道了人工繁殖玉米螟长距茧蜂的几个重要问题。
This paper report, on some important problems about the artificial breeding of Macrocentrus linearis (Nees).
金鱼的繁殖，可分为两种繁殖方式，自然繁殖与人工繁殖。
Goldfish breeding reproduction can be divided into two kinds natural reproduction and artificial propagation.
关于人工繁殖生命的争论忽略了目前克隆过程效率低的事实。
What is overlooked in the arguments about the morality of artificially reproducing life is the fact that at present, cloning is a very inefficient procedure.
本文介绍福寿螺的外部形态，生活习性，人工繁殖方法和越冬。
This paper introduces the contour of fushou snail and its living habits, captive breeding methods and how to live through winter.
他说，优良的农业科学可能会在人工繁殖中消除任何对人类有害的疾病。
He says good farming and science could probably wipe out any diseases that may be harmful to humans.
卧龙项目是一项计划，以逐步释放的第二阶段人工繁殖大熊猫放归野外。
The Wolong program is the second phase of a plan to gradually release captive-bred giant pandas into the wild.
文末，对人工繁殖的玉米螟长距茧蜂生活力较低的原因也进行了分析讨论。
The vitality of wasp declines as the number of generations of artificial breeding increases, Fin…
宽嘴鹬 人工繁殖计划17只已孵化雏鸟中的一只，该计划为了拯救濒临灭绝的宽嘴鹬。
One of 17 spoon-billed sandpiper chicks that have hatched in a captive breeding scheme to bring the bird back from the brink of extinction.
本发明采用人工饲料进行多异瓢虫的饲养，为多异瓢虫的人工繁殖提供了保证。
The Hippodamia variegate is fed with the artificial feed, thereby the artificial propagation of the Hippodamia variegate is ensured.
遗传学控制在非人灵长类动物人工繁殖种群诸多管理环节具有至关重要的作用。
Genetic control is an important component of the general management of nonhuman primate colonies.
本研究拓展了扬子鳄的人工繁殖技术，为扬子鳄人工繁殖场地的兴建提供参考资料。
This research is a development for the artificial reproductive technique of the Chinese Alligator, and will supply a reference data for the construction of its artificial breeding field.
周四曼谷渔业官员手上拿着一只扁头鳖，泰国渔业部首次人工繁殖出这种稀有鳖类。
The narrow-headed soft-shelled turtle is shown in the hand of a fishery official in Bangkok Thursday. The rare turtle was bred in captivity for the first time by the Thai Fishery Department.
人工饲养麦蛾，扩大人工繁殖天敌的种类，为扩大生物防治范围提供基础的技术保证。
It provided basic technological guarantee for enlarging scope of biological control to feed artificially Sitotroga cerealella and enlarged the kinds of natural enemies by artificial breeding.
对翘嘴红鱼白亲鱼的池塘驯化培育和人工繁殖技术以及夏花鱼种的培育技术进行了研究。
This paper studied the techniques of pond domestication and artificial propagation of brood fish of Erythroculter ilishaeformis and the cultivating of its summer fingerlings.
本发明的多异瓢虫的人工繁殖方法实现和推动其人工扩繁、商品化生产、运输和释放应用。
The artificial propagation method of Hippodamia variegate realizes and promotes the application of artificial propagation, commercialized production, transportation and release.
无疑地，鱼类加工商很高兴你有这一想法。但事实上大多数在超级市场出售的都是人工繁殖鲑鱼。
Certainly fish processors are happy to have you believe this, but in reality much of what is sold in supermarkets is actually farmed Salmon.
印度尖嘴秃鹰的未来也许取决于首次尝试的人工繁殖，自从1990年以来，它的数量已经减少了97%。
The future of slender-billed vultures in India may lie with the first of their kind to breed in captivity following a 97% crash in the species population since the 1990s - or it may not.
利用愈伤组织法对咖啡短体线虫进行了人工繁殖，并分析讨论了温度、培养时间、接种量对繁殖量的影响。
Pratylenchus coffea was monoxenically reproduced on carrot disk culture, and the effect of time, temperature, and inoculum density on reproduction were discussed in the study.
我们能看到这个病毒的谱系，它的上代病毒是北卡罗莱纳州一个大型集约化动物农场的人工繁殖基地中演化出来的一个病毒。
We can see its family tree - and its daddy was a virus that evolved in the artificial breeding ground of a vast factory farm in North Carolina.
中国的鹰猎者们在开始实施人工繁殖程序之前，他们必须要先联合起来，成立一个组织，共同分享信息和观点。
Before Chinese falconers can start captive breeding programs, thy must join together in some sort of organisation and share information and ideas.
该研究为园艺学研究提供了用孢子人工繁殖剑叶凤尾蕨的方法，也为分子生物学、遗传学和蕨类植物系统学研究提供了基础。
This study reveals not only the technique of propagation of P. ensiformis with spores for horticulture but also the proper conditions for molecular biology, genetics and systematics study.
为使天敌能大量人工繁殖，从分子生物学角度对单头桑天牛卵啮小蜂基因组DNA的提取方法及RAPD反应条件进行了探索。
In order to propagate more Aprostocetus prolixus, we studied the method of genomic DNA extraction and optimization of RAPD ana- lytic conditions.
为使天敌能大量人工繁殖，从分子生物学角度对单头桑天牛卵啮小蜂基因组DNA的提取方法及RAPD反应条件进行了探索。
In order to propagate more Aprostocetus prolixus, we studied the method of genomic DNA extraction and optimization of RAPD ana- lytic conditions.
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