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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BACKGROUND: Common metal bone fracture plate had powerful stress force shelter reaction in fixed bone segments and moreover, is has no induction and guiding reactions in bone growth.

背景：普通金属接骨板对固定骨段具有强大的应力遮挡作用，且对骨组织生长无诱导及引导作用。

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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