In 1973, his son Edward M. Kennedy Jr., then 12, developed a bone cancer that cost him a leg.
1973年，他当时才12岁的儿子小爱德华·肯尼迪(Edward M . Kennedy Jr .)罹患骨癌，失去了一条腿。
A member of the team, Raffaella Righetti of Texas A&M Engineering University, has therefore developed a portable ultrasonic scanner that can give instant three-dimensional images of a bone.
研发团队的一名成员，德克萨斯A&M工程大学的Raffaella Righetti已经开发了一种可携带的超声扫描器，可即时提供骨头的三维图像。
The maximum stress on alveolar bone of two models-edentulous region was equal, while the stress of M model distributed more widely.
两种修复方案模型缺牙区牙槽骨最大应力接近，其中M模型应力分布更广泛。
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