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The "Y" type olfactometer test showed that sex pheromones in female solvent extract and female volatiles were both attractive to the males, indicating the presence of sex pheromone in female collections. There was no significant difference in attractive effect between two methods of collection.

Y型嗅觉仪测定表明，雌蚊溶剂浸提和空气收集法获得的提取物对雄蚊有引诱作用，且二者引诱效果无显著性差异(P=0.655)，雄蚊对雄蚊提取物无选择性，说明2种方法均从菊花瘿蚊雌蚊提取到了性信息素。

Near the female spider, spider hung in the distance waving constantly have to foot, if fixed Fuzhao female and male spider can be carried out close to the female mating, the male semen to be with their feet into the female spermatheca in .

在靠近雌蛛前，雄蛛在远处不断地挥舞脚须，若雌蛛伏着不动，雄蛛才得以靠近雌蛛进行交配，雄蛛用脚须把精液送进雌蛛的受精囊中。

Most of melon were andromonoecious, monoecy can not only reduce the hand pollination but also can improve the quality of F1 hybrids than other andromonoecious accessions.

大多数甜瓜是雄全同株材料，而雌雄异花同株材料除了在育种过程中能减少大量复杂的去雄工序外，其F1果实发育也要强于雄全同株材料。

The reproductive development process of birch was described as follows: Male inflorescences extended from apical bud in early June. In later June, stamen primodium was differentiated in the bract of male inflorescence and the differentiation of bract was generated in female inflorescence. During July, anther layers and archesporial cell were differentiated in anther, then archesporial cell developed into mother microspore cell. Pistil primodium came into being at the same time. In early part of August the meiosis of mother microspore cell started. In later August, mono-nucleus microspore was formed. After September, both male inflorescence and female inflorescence were dormant.

白桦的生殖生长发育过程如下：6月初，雄花序从顶芽中生长出来。6月中下旬，雄花序苞片上分化出雄蕊原基，雌花序分化出苞片。7月，雄花花药分化出花药壁和孢原细胞，孢原细胞演化为小孢子母细胞，雌花序苞腋处分化出雌蕊原基；8月中上旬，小孢子母细胞减数分裂，8月下旬形成单核小孢子；9月后雄花序以单核小孢子状念越冬，雌花序以雌蕊原基状念越冬。

The mate choice of Brandt′s voles Microtus brandti was investigated in the laboratory to study the mating system of this species. It was found that the female voles spent significantly more time visiting the partners than the strange males, but the male voles did not show any preference of the partners to the strange females. A female vole showed no difference in the copulatory behavior between an unfamiliar male and a familiar male which had copulated with her for 15 minutes, but she visited and fought the unfamiliar male significantly more than the familiar male. A male vole significantly preferred visiting and mating with an unfamiliar oestrous female to a familiar female which had copulated with him for 15 minutes.

在实验室通过布氏田鼠对配偶与陌生异性鼠、已交配和未交配异性鼠、熟悉和陌生异性鼠三种情况下配偶选择的实验研究，结果表明：雌性布氏田鼠对配偶的选择显著地要多于陌生雄鼠；虽然对陌生和熟悉雄鼠选择差异不显著，但对陌生鼠的选择强度要高于熟悉雄鼠；同时对已交配和未交配雄鼠的选择无显著差异。

An annual period of heightened aggressiveness and sexual activity in male elephants, during which violent frenzies occur.

雄象发情狂每年雄象出现充满杀机和交配行为的时期，这个时期雄象会极度狂乱

The change of syconia number and the duration of phase B and phase D of different Ficus awkeotsang strains were compared. Results showed that the length of phase D of male syconia was about one month, while the length of phase B of female and male syconia was 2-3 months. This means that phase B and phase D could not overlap completely, resulting in the falling of syconia in phase B due to lack of wasps for pollination.

比较爱玉子不同品系雌、雄花序的B期与雄花序的D期花序数量变化及持续时间，结果表明：栽培爱玉子雄花序D期时长约1个月，而雌、雄花序的B期时长却是2~3个月，B、D期不能完全重叠，导致B期花序因没有小蜂传粉而脱落。

2Similar to other shrimps, artificial pond culture Penaeus monodon also had difference in growth between female and male. At early culture period, the difference between them was not distinct, but the female would grow more quickly than male after the fifty-ninth day. The body weight growth turning point of the male appeared at the 144.5 days, and at the 195. 3 days for the female.(3) By using Von Bertallanffy growth equation, the growth equations of Penaeus monodon were abtained.

养殖前期，雌、雄虾的体长、体重生长差异不明显，雄虾略高于雌虾，在59.6d后，雌虾体长生长速度高于雄虾；雄虾体重的生长拐点出现在144.5d左右，雌虾体重的生长拐点出现在195.3d左右；(3)采用von Bertallanffy生长方程，拟合出池塘养殖斑节对虾体长、体重生长方程为：。

Dehydroepiandrosterone and its sulphate DHEAS are the most abundant circulating sex steroid hormones in women, providing a large precursor reservoir for the intracellular production of androgens and oestrogens in non-reproductive tissues.

脱氢表雄酮和硫酸盐脱氢表雄酮是女性体内最丰富的循环性类固醇激素，作为雄激素和雌激素合成的前提储存，用于在非生殖组织的胞内合成雄激素和雌激素。

Dehydroepiandrosterone and its sulphate DHEAS are the most abundant circulating sex steroid hormones in women, proiding a large precursor reseroir for the intracellular production of androgens and oestrogens in non-reproductie tissues.

脱氢表雄酮和硫酸盐脱氢表雄酮是女性体内最丰富的循环性类固醇激素，作为雄激素和雌激素合成的前提储存，用于在非生殖组织的胞内合成雄激素和雌激素。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。