從準備期間到穿上西裝,踏上戰場的那一刻 我常常驚覺自己的渺小,即使場面見得多,緊張仍會上身 台中新竹桃園巡迴了好多次,同時也暗自規劃明年的行程 下一站要回到自己的家鄉,雖然溫暖的家有些許的改變 但我仍相信我和我的家人,能夠攜手度過這些改變:)
Experimental measurements of the phase and group velocities of body waves in a transversely isotropic medium In anisotropic media, the directions of the phase and group velocities are not necessarily the same, but the projection of the group velocity vector on the wave normal is equal to the phase velocity