Methods: The fractured ulna of 43 rabbits were stimulated by vibration stress force of different frequency.

方法：应用可调脉冲频率的振动应力刺激仪，对43只家兔尺骨骨折进行不同频率应力刺激。

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The paper provided with a method to calculate the pre-stress loss caused with systolic stress in the outside of pre-stress force.

本文针对体外预应力混凝土简支梁的受力、变形特点，提出了计算体外预应力结构中收缩徐变产生的预应力损失的基本方法。

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It not only expedites growth of prawn; but also enhances energy of prawn; and strengthen anti-stress force and immune resistance to disease.

不但可促进对虾生长，而且可增强对虾活力，提高对虾的抗应激及免疫抗病力。

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Mr. Abbott said that while the sacrifice "certainly puts stress on the police force, " officers wanted to work with the district to secure its 8, 000 students.

WSJ: Town Divided Over Schools and Firearms

According to Dr Andre Menache, one of Noah's senior members and a Jerusalem-based veterinary surgeon, the ruling's stress on cruelty means any alternative to force-feeding will have to be provably non-harmful.

BBC: Israel court cans foie gras farms

First, it is an operational one - the Northumberland's captain Martin Simpson was at pains to stress that he would need a much more robust force - including two helicopters - to ensure that his crew were not at risk.

BBC: Somali pirate patrol: Day five