雄性

这个物种的雄性和雌性几乎无法分辨。

The male of the species is almost indistinguishable from the female .

这一物种的雄性有一条白色的尾巴。

The male of the species has a white tail .

这种鸟雄性比雌性更加色彩艳丽。

The male birds are more colourful than the females .

雄性的精子使雌性的卵子受精。

The male sperm fertilizes the female egg .

雄性动物在求偶时会尽量展示自己，并发出一些声响。

Courtship is somewhat vocal with a lot of displaying by the male .

雄性动物死死地守护着他们的配偶。

The males guard their mates zealously .

雌性与雄性配对时，雌性不允许其他雄性与之交配。

During the time she is paired to a male , the female allows no other males to copulate with her

也可用雌性f1与隐性纯合雄性亲本回交。

F1 females could be backcrossed to the male homozygous recessive parent .

兽中的雄性动物保护雌性动物和幼崽。

The males in the herd protect the females and the young .

雄性动物常比雌性动物大。

The males are often larger than the females .

维兰特的研究全面细致地追踪了这些雄性。

Vaillant 's study followed these males in great detail .

然后是雄性蜜蜂，即雄蜂。

Then there are the male bees , or drones .

交配和打斗过后，雄性螃蟹再蘸一蘸潮湿的海水，回到内陆。

As mating , and fighting abates , males dip again and begin returning inland .

疑有诱发倒位的雄性然后用于建立原种。

The males suspected to have induced inversions were later used to build up stocks .

这朵花是雄性植物。

This flower is a male .

现在，对过去十年中在英国各地被冲上岸的数百只港湾鼠海豚的研究，又引起了人们对雄性生殖能力的担忧。

Now , research on hundreds of harbour porpoises washed up around the UK over the past decade raises concerns about male fertility too .

“男性更年期”据称是由于睾丸素逐渐减少，睾丸素是一种雄性激素。

Andropause - also colloquially1 known as male menopause - is said to be the result of a gradual drop in testosterone , which is an androgen .

该老虎为雄性，约3岁，体重450斤，营养状况较好，体壮，没有受伤。

The male tiger , about 3 years old , had suffered no trauma . It weighed 225 kilograms and was strong , having had good nutrition .

玉米C型胞质雄性不育系花药发育的细胞学观察

The cytological observation of anther development in c cytoplasmic male sterile corn

玉米雄性不育的基因表达与调控Ⅰ.克隆化玉米线粒体DNA的离体转录

Gene Expression and Regulation of Male Sterility in Maize ⅰ . In vitro Transcription of Cloned Maize Mitochondria ! DNA

邻苯二甲酸二丁酯宫内和哺乳期染毒对F1代雄性大鼠的生殖发育毒性

Reproductive and developmental toxicity of F_1 male rats treated with DBP in utero and during lactation

小麦光敏雄性不育基因的遗传分析及RAPD标记

Heredity and RAPD Markers Analysis of Wheat Photoperiod-sensitive Male Sterile Gene

另6只正常SD成年雄性大鼠作为对照。

Other 6 normal adult male SD rats were in the control group .

健康雄性SD大鼠48只，SPF级。

Forty-eight male SD rats in a SPF grade were selected .

方法雄性Hartley豚鼠30只，随机分为实验组（H组）和对照组（C组），每组又分3个亚组，各5只。

Methods 30 male Hartley Guinea pigs were randomly divided into experimental group and control group .

MPA和MPA+TU对雄性大鼠生精功能和生殖激素的影响

Effect of MPA and MPA + TU on the Rat Spermatogenesis and Sexual Hormones

雄性大鼠去势后下丘脑NOS神经元的分布

Distribution of NOS neurons of hypothalamus in the male rat following castration

材料和方法：40只正常雄性SD大鼠，体重200~250g。

Materials and Methods : 40 healthy male SD rats , weighted 200 ~ 250g .

方法腹腔注射递增剂量的盐酸吗啡使雄性SD大鼠形成吗啡依赖，并用纳洛酮催促戒断。

Methods Nucleus accumbens was dissected out from morphine dependent and naloxone precipitated withdrawal rats .

方法选用SD雄性大鼠制作慢性轻度不可预见性的应激抑郁模型。

Methods Male Sprague Dawley rats were exposed to an unpredictable sequence of mild stressors .