利用
3.The premise of using Heaviside expansion to find the solution of the unit impulse response of the system is to find out all the possible forms of the pole of close-loop.
4.utilization of wind energy
6.grassland utilization
2.What you say is reasonable.But it`s not the only way to push sales for us.We may make full use of our advertisements and sales force to enlarge our sales market.
你说的没错.但是代理并非是促销的唯一渠道.我们可以充分利用广告和销售人员来扩大我方的销售市场.


