The company reported an appreciable increase in profits this quarter.

公司报告称本季度利润有可观的增长。

An appreciable increase in demand

需求的明显增加

There has been an appreciable increase in the volume of business.

交易额有了显著增加.

The yield point is the stress at which there is an appreciable increase in strain with no increase in stress, with the limitation that, if straining is continued, the stress will again increase.

屈服点是在应变有可观增加，应力没有增加的应力极限，在这个极限下，如果应变继续增加，应力就也会增加。