W：我们要求即期全部付款，因为我们可以保证我们产品的机器效率达到90%，你在其他的供货商那里得不到这样的保证，通常的比率大约是85%。

W: We ask for full payment at sight, because we guarantee 90% mechanical efficiency for all our products. You don't have the same guarantee from other suppliers. The usual percentage is around 85.

youdao

课堂教学效率是指向教学目标的有效教学时间与实际教学时间的比率，它是实现教学目标的价值量度。

Classroom teaching efficiency means the ratio between the effective teaching time of teaching objectives and actual teaching time, and it is the measure of value of attaining the teaching objectives.

youdao

比率低于66%，锡膏转移的效率降低，印刷质量变差。

As the ratio decreases below 66 percent, paste transfer efficiency decreases and print quality becomes erratic.

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