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1. T??-??tr????@bullet@bullet?@bullet?r-s, ?. ???-?v-e, =. 0. 15?-?-?-?-???r?-t??-??t?r-?-?-@bullet???@bullet?s-?r?-st, ?. ??-?r-?-?-?-?-t?r?, ?. T?? et al., ??r ?????s ?? s???r???? ???? ??r???????t? ? ? s = 0m/s ?s???? ?????? ? = 1 × 10 ?5 m/s ???s????ts?? ? = 1 × 10 ?4 m/s ???s??s?? ? = ?m/s ???ts?? ??r? s?????t?? ?? t?? ??s??s ??t? s??t??? ??s?r?t???t??? h = 0