离心式风机共振吸声器是一种简便、经济的降噪措施。
The absorber is a simple and economic measure to decrease noise.
本文提出了一种实用可靠、经济简单的低场核磁共振系统的脉冲功率激励源设计方案。
Design of a pulsed power source in the low field nuclear magnet resonance (NMR) system with the advantages of practicality, reliability, economy and simplicity is proposed in this paper.
举例来说，经济合作与发展组织国家平均每100万人享用11台核磁共振仪器。
For instance, the OECD countries have an average of 11 magnetic-resonance imaging machines per 1m people.
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