More economical waste treatment plant design will be possible with less guesswork . 有可能以较少的猜测来更经济地进行废水处理站的设计。
The cruise condition must also be economical and adequate for the aircraft mission . 巡航状态也必须是经济的以及能够适应飞机的飞行任务。
It is often economical to orient the flight lines in one direction rather than another . 把航线定向在某一方向上住住会比定向在另一方向上更加经济。
Accordingly collins and i spent several economical and instructive weeks together in ravenna . 因此，科林斯同我在腊万纳过了几周节俭的，有益的生活。
When we had done the costings on the project , it was clear it would not be economical to go ahead with it . 我们计算了成本，清楚表明这项工程不合算。
The purpose is to keep the tree within height and width bounds for more economical management . 目的是使树冠保持在一定的高度和宽度的范围内，更经济地管理。
If tailored to the job and to the size of the enterprise, control will probably be economical . 如果适合于工作，且适合于企业的规模大小，控制可能是经济的。
After a certain length of time, they learn to communicate in more economical ways, such as by cable . 他们经过一定时间，学会了使用如海底电报这样的更经济的方法。
Efficient and economical artificial recharge projects can often result from utilizing the bed of the main stream channel . 有效而且经济的人工补给措施一般可以利用主河道的河床。
Oral ingestion is the most common method of drug administration. it is also the safest, most convenient, and most economical . 口服是最常用的给药方法，也是最安全，最方便和最经济的方法。
