The results of these tests were added together to form an aggregate score for each age group.
相同年龄段的孩子的测试得分被累加起来作为这个年龄组的总成绩。
"When platelets aggregate, they form the plug that clots the vessels, " explained Dr. Stuart Weiss, a clinical assistant professor of medicine at New York University School of Medicine.
对此,美国纽约大学临床助理教授斯图亚特·外斯博士解释说:“当血小板凝聚时,就会形成血液凝块堵住血管。
Scoria walls are made from a porous, lightweight red volcanic aggregate which is mixed to form a self - supporting semi-fluid and rammed into formwork similar to the process of rammed earth.
火山渣墙由多孔、重量轻的红色火山岩集料建成,经过混合形成自支撑的半流体,被夯入模板,这类似夯土。
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