The paper studied the ovulation rate and embryonic vitality of dam line pigs of CRP multiple cross systems.

本文以CRP配套系母猪系猪为材料，研究其排卵与胚胎活力。

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The results obtained by these methods will play a role of support to technical basis and scientific research achievements for choosing dam line.

采用超载法、强度折减法及点安全系数法评价下坝线拱坝的安全度，为该水电站坝线比选提供技术依据和科研成果支撑。

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Marginal profits for all objective traits but litter size born alive in dam line of dam breed are 1/2 smaller than those in sire line of dam breed.

父本父系目标性状不包括窝活产仔数，母本母系目标性状的边际效益除窝活产仔数外的所有性状都比母本父系小1/2。

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It comprises a few rows of identical houses, built to house the workers of a hydro-electrical dam and a brief line of shops.

BBC: The dinosaur route of northwest Patagonia

At Exeter, Network Rail is using a water-filled tube to act as a dam to protect the main railway line between London Paddington and Penzance from flooding.

BBC: Braunton 'cut off' by flood water as rain hits Devon