substratum造句
31. The growth and the purification ability of Hemerocallis fulva Linn. in heavy and light eutrophic water were studied by means of soilless cultivation technique on artificial substratum.
32. This study research on user's environment cognition just for get at extrapolate about people's requirement and behavior tendency and yet provide theory substratum about design job.
33. The best nutrition supply was basic substratum mixed with rapeseed cake liquid.
34. The soilless cultivation technique on artificial substratum was studied in order to purify the eutrophic water body and to get considerable economic benefit at the same time.
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