A new approach, in which only the one_side measurement reflection data for one round trip through the viscoelastic layer, is developed.
在时间域内讨论了粘弹性介质的逆散射问题，其中粘弹性介质的波阻抗在远离入射波作用面一侧的交界面上是不连接的· 介质的散射算子，传播算子所满足的微分积分方程可以用来反演未知的粘弹性介质的松弛模量，文中给出的反演过程只须利用介质层一侧的反射算子在一个走时来回的时间内的实验测量数据· 最后，给出了数值算例，计算结果表明，利用方法可以较准确的反演得到材料松弛模
stretched his opponent in the first round.
在第一个回合击倒对手
a turn at wrestling.
摔跤运动的一个回合
The termination of a batsman's innings.
击球手一个回合的结束
The challenger is kayo in the first round. (also k.o.)
挑战者在第一个回合，就被击倒在地上。
But it shivered into pieces on its very first trial;
但在第一个回合中，宝剑就裂成碎片了。
He downed his opponent in the first round.
他在第一个回合中击倒对手。
He was outed in the first round.
他在第一个回合中被击败。
The act or a bout of wrestling.
摔跤摔跤的动作或一个回合
With one bound, it seems, the EU will be free.
看起来，就这一个回合，欧盟就可以统一了。
In the last round, Smith fairly lammed into his opponent.
在最后一个回合，史密斯把他的对手狠揍了一顿。
Nine innings make a game.
九个回合就是一局比赛。
Returns a value along a linear trend
通过一条线性回归拟合线来返回一个预测值
Calculates, or predicts, a future value along a linear trend by using existing values
通过一条线性回归拟合线返回一个预测值
You still have one bowl left in this frame.
这一回合你还有一个球没打。
He could not come up with a proper answer.
他想不出一个合适的回答。
"Clay will not last two rounds", they said.
人们说：“克莱一定撑不过两个回合。”
The Dutch had won the first round.
那个荷兰人赢了第一回合。
Returns a set, removing duplicate tuples from a specified set.
返回一个集合，从指定的集合中删除重复元组。