Objective To study the influence of incidence angle of ultrasound and strain length(SL) on strain imaging(SI) and strain rate imaging(SRI) in long-axis direction.
目的探讨室壁与入射超声之间的夹角及应变长度（SL）对长轴方向应变成像（SI）和应变率成像（SRI）的影响。
The objective of tyre alignment is to get those tyres pointing in the right direction, without a positive or negative toe Angle.
推罗的目的是让那些油罐车轮胎对齐指向正确的方向，没有一个积极的还是消极的辗轧角。
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