Through the tests run on the car over two years better technical and economical advantages have been achieved.
经两年装车运行试验取得较好的技术和经济效益。
Actual operation as well as technical and economical comparison have shown that this system has outstanding advantages.
通过实际运转及技术经济比较，证明该系统具有无可争辩的优越性。
Compared with solid brick, hollow shale brick and aerated concrete block, it has obvious advantages in technical and economical respects.
与实心砖、页岩空心砖和加气混凝土砌块相比，在技术和经济方面均有优势。
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