方板对角拉伸试验即y BT模型是日本冲压行业著名学者吉田清太提出的评价板材冲压成形性能的著名试验。

Yoshida Buckling test (YBT) which has been developed by Japanese famous scholar Yoshida is a notable test for appraising the sheet stamping formability.

youdao

你知道，我对他太了解了，我当过他两年的秘书，他是什么样的人我一清二楚。

You see, I knew him so well. I'd been his secretary for two years.

youdao

水太清,则无雨.

The water that is too clean has no fish.

youdao

I fully understand the value of what you are driving at, but frankly, the narrative as it now stands simply will not support a more general or hopeful conclusion.

但你的提议太含糊不清，说实话，你说的,无助于更好的结局。

耶鲁公开课 - 1945年后的美国小说课程节选

oh, it's kind of hard to compare case 2 and 3 when we can't see it anymore.

噢，我们不太好比较第二和第三选项3,这里看不清了。

麻省理工公开课 - 化学原理课程节选

After 19--I don't know if Wal-Mart--was it around in 1960?

我记不太清,大概在1960年左右吧

耶鲁公开课 - 金融市场课程节选