这是做了一系列的过滤器和碘的包装内的稻草。
This is done by a series of filters and iodine packed inside the straw.
现场试验是保证高效过滤器和碘吸附器有效性的必要措施。
In place test is a necessary measure to assure the effectiveness of HEPA filter and iodine adsorber.
现场试验是保证高效过滤器和碘吸附器有效性的必要措施。
In place test is a necessary measure to assure the effectiveness of HEPA filter and iodine adsorber.
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