1) sensitive stage
敏感虫期
1.
The second instar larvae was the most sensitive stage for prepupal diapause induction,the prepupae could go into diapause only when the second instar larvae was subjected to the diapause-inducing short-day.
2龄幼虫期是诱导预蛹滞育的敏感虫期,只有当2龄幼虫期处于短光照条件下时才能进入滞育状态。
2) sensitive insect
敏感昆虫
1.
represents of Pyrethriods were used to select their most sensitive insects from Drosophila,Housefly,weevil,potato tuber worn,TenibriomolitorLinne,which were fed indoors for a long time.
选取拟除虫菊酯类农药中有代表性农药,对长期室内饲养的家蝇、果蝇、马铃薯块茎蛾、米象及黄粉虫等进行毒力测定,筛选出相对敏感昆虫用于检测拟除虫菊酯类农药残留,并通过色谱法对其检测结果进行评价。
3) sensitive stage
敏感虫态
4) sensitive period
敏感期
1.
Application of laser in situ keratomileusis in anisometropic amblyopia of hyperopia after the sensitive period of vision;
视觉敏感期后远视性屈光参差性弱视LASIK治疗评价
2.
The effectiveness of laser in situ keratomileusis for anisometropic amblyopia in children past the sensitive period for visual development based on clinical observation;
准分子激光原位角膜磨镶术治疗视觉敏感期后远视性屈光参差性弱视
3.
An update of research on the plasticity of amblyopia after the sensitive period;
视觉敏感期后弱视的可塑性研究进展
5) Critical period
敏感期
1.
Development of molecular mechanisms underlying critical periods for exper ience-dependent plasticity in visual development;
视觉发育敏感期及其可塑性机制的研究
6) Sensitive stage
敏感期
1.
Cooling temperature treatment on different ripening rice cultivars at microspore stage was conducted in phtotran and the rice sensitive stage to cooling temperature was evaluated by distance between pulvinus and days before heading.
利用人工气候对黑龙江省早、中、晚熟的6个水稻品种在小孢子发育阶段进行低温处理,利用叶枕距和距抽穗期的天数作为标准评价水稻对低温的敏感期。
补充资料:欧洲式期权、美国式期权与亚洲式期权
欧洲式期权、美国式期权与亚洲式期权
【欧洲式期权、美国式期权与亚洲式期权】期权合约所规定的权利有一定的时效期,过了失效日后,权利即行作废。一些期权规定权利仅能在有效期的最后一天执行,这种期权被称为欧洲式期权(ell功pean叩tions);另一些期权则容许在有效期内任何一天执行,这种期权被称为美国式期权(一~oPtions)。值得指出的是,虽名为欧洲式或美国式期权,但已无任何地理上的意义。由于欧洲式期权的规定过于严格,又出现了一种“改变的欧洲式期权”,它允许期权在一定的时间范围内进行交易。可见,美国式期权为期权购买者提供了更多的选择机会,因此,它的购买者也往往需支付更高的保险费。近年来无论在欧洲或美国,所交易的期权均以美国式为主,欧洲式期权虽仍存在,但其交易量已比不上美国式期权。 在so年代末期,市场上又出现了一种所谓亚洲式期权(asian ontions),但也无地理上的意义,其差别主要在于履约价值(exe而sev公此)的计算。以买权为例,无论是美国式期权或是欧洲式期权,执行权利所能得到的履约价值均为当时标的物的市价减去履约价格,再乘以合约所定的数量,但亚洲式期权的履约价值则为权利期间内标的物市价的平均(计算至履约日为止),减去履约价格,再乘以合约所定的数量。
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参考词条