本文给出了线性系统最经济控制问题的一种解法。
A new method for the most economical structural synthesis of linear control systems is reported in this paper.
经济周期按理说是被控制住了，但是全世界都处于自20世纪30年代以来最严重的经济衰退。
The business cycle was supposedly subdued, yet the world is in the deepest recession since the 1930s.
优选最合理和经济的设计方案，是保证和确定合理造价的前提，也是有效控制工程造价的关键。
Optimizing the most reasonable and economic design program, is the guarantee and determine the premise of the reasonable cost, is the key to effective control of the project cost.
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