Besides striking closer to a major population center, the 6.3-magnitude Christchurch earthquake had a depth of just 5 kilometers (3 miles).
这次6.3级的地震发生在人口密度较集中的赖斯特彻奇市附近,而深度只有5公里(3英里)。
NANCY GRACE ROMAN: "I think the image that to me was most striking was the center of a globular cluster."
罗曼:“我觉得那张图片最让我印象深刻的是球状星团的中心。”
Striking near the rim of the drumhead makes bright sounds, while striking near to the center of the drumhead makes richer sounds.
打击接近鼓面的地方会有较清晰嘹喨的声音,而打击接近鼓的中心会有更圆润的声音。
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