英语当中的“倍数”怎么表达？

1.在我国南方经济发达地区，一个工程师的工资通常是内地同等职位的3倍甚至更多。
In the developed south area of China, the salary of an engineer is usually as three times, even more, as which in mainland on equal position.

2.在我的努力下，生产线每小时的产量提高了2倍以上。
In my efforts, the yield on producting line increased by more than two times each hour.

1 In the rich area of the southern country, an engineer's income is 3 times that of an engineer from the inland

2 The production has been improved by 2 times than usual

In the developed area of South China, an enginer's salary usually as three times as that in inland area,and sometimes even more.

With my hard work, the output of the product lines increase for more than two times.

在我国南方经济发达地区，一个工程师的工资通常是内地同等职位的3倍甚至更多。 In the economic developed area of South China (or southern part of China), the income (salary, remuneration) of an engineer is 3 times that of those in inner (inland) China.
2.在我的努力下，生产线每小时的产量提高了2倍以上。 <