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The periodic state of sexual excitement in the female of most mammals, excluding human beings, that immediately precedes ovulation and during which the female is most receptive to mating; heat.
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（雌性动物的）动情，动情周期大多数哺乳动物（包括人类）的雌性产生的周期性的性冲动，在此期间内雌性具有排卵的优势，所以该期间最适合性交；刺激 |
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The periodic table now contains all the elements known to man arranged in their proper sequence.
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现在周期表包括人类已知的全部元素，这些元素按适当的顺序排列起来。 |
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The periodic table would appear thus to have won a temporary reprieve.
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元素周期表的修改貌似要减缓咯。 |
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The periodic variation in speed of a synchronous motor with respect to the current.
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（同步电动机的）速度偏差同步电机运行速度的周期性变化 |
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The periodical is obtainable on the very first day of every month.
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这本杂志每月一号出版。 |
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The periodontal ligament has many important mechanical functions,such as supporting teeth,transferring and dispersing biting force.
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牙周膜具有支持牙齿、传导和分散力的重要力学功能。 |
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The periods of time, in which temperautre elements have greatest influence on cotton climatic output in Akesu cotton region, are from cotton flowering to full flower stage in summer (July 14 to July 28) and from later spring to middle summer (May 17 to Ju
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温度要素对阿克苏地区的棉花气候产量有最大影响的时段是在盛夏的棉花开花—开花盛期(7月14日～7月28日)，其次为春末和夏季的前中期(5月17日～7月24日)的属于第一真叶—开花盛期的时段。 |
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The peripheral coronary arteries may undergo sclerosis, as seen here in an artery branch with a very small lumen, with chronic hypertension.
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冠状动脉分支硬化，如图所示高血压时小动脉分支硬化，管腔明显狭窄。 |
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The peripheral eosinophil count or the sputum eosinophils can be increased during an asthmatic attack.
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哮喘发作时外周嗜酸细胞计数或痰嗜酸细胞计数增加。 |
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The peripheral oil fields of Daqing have a poor reservoir property, obvious lateral alternation of sand body, and condensed faults.
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大庆外围油田储层物性差、砂体横向变化大、断层密集。 |
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The peritoneoscope is put into an opening made in the abdomen.
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腹腔镜放进一个开了他的腹部. |
