绿茶婊
缆绳打断腿骨 一渔民受伤昏迷 直升机出动救援_东海救助局_机组_我的网站
A |
Lunar soil Photo: IC
Chinese scientists have made new progress in the study of lunar soil samples returned by the Chang'e-6 mission, providing fresh evidence to the striking differences between the moon's near and far sides, which have long puzzled scientists.
Because the moon is tidally locked to Earth, its rotation period matches its orbital period, meaning the same side always faces Earth. The moon's near side features vast dark basaltic plains known as lunar maria, while its far side is dominated by bright highlands with far fewer maria, creating a striking contrast between the two sides. Why does the moon have such "two faces"?
Scientists studying the moon's early formation and evolution have long used the lunar magma ocean model as a basic framework. Under the model, the chemical and isotopic characteristics of different types of lunar magma can be explained by the mixing of different components in varying proportions after the magma ocean cooled, Guangming Daily reported on Saturday.
However, previous lunar samples were collected only from the moon's near side, while significant differences exist between the near and far sides in their topography, composition and internal structure.
Against this backdrop, the research team from Institute of Geology from Chinese Academy of Geologist Sciences studied feldspathic impact-melt rocks in lunar soil samples returned by the Chang'e-6 mission. Using China's first independently developed ion probe system, researchers conducted a comprehensive analysis to test the lunar magma ocean model and examine how large impacts reshaped reservoirs in the lunar crust and mantle.
Through high-precision analyses, the team identified key clues to the moon's evolutionary history, suggesting that the stark differences between its near and far sides may be linked to the ancient giant impact that formed the South Pole-Aitken Basin.
The study found that the massive impact continued to profoundly reshape the lunar crust and upper mantle after the lunar magma ocean had solidified, fundamentally altering the material composition of parts of the moon's far side.
The findings add to the traditional lunar magma ocean model, suggesting that the formation and preservation of the moon's crustal and mantle reservoirs may have varied significantly from region to region and cannot be fully explained by a single, uniform model of primordial magma-ocean differentiation.
The research provides new scientific evidence for understanding the differences between the moon's near and far sides, while offering fresh insights into the moon's complex evolutionary history, according to Guangming Daily.
Global Times
。
原标题：缆绳打断腿骨 一渔民受伤昏迷 直升机出动救援救援人员通过绞车吊运方式将受伤渔民接至机舱。（东二飞 供图）本报讯（记者 曾嫣艳 通讯员崔博闻）9月11日上午，接福建RCC险情信息，在东山岛东侧约120公里海域，“南澳渔88207”轮上一渔民作业时不慎被缆绳打断腿部，失血昏迷，情况危急。交通运输部东海救助局立刻指令东海第二救助飞行队执行救助任务。
B | 接到任务后，在厦门高崎机场待命的“B-7345”机组在做好飞行评估和各项准备后，第一时间出动救援。
C | 考虑到伤员腿骨断裂，大量出血，已出现昏迷症状，随时有生命危险，机组决定，在接到伤员后直飞厦门大学附属翔安医院救治。上午10时27分，“B-7345”救助直升机从厦门高崎机场火速赶赴现场。经过近一小时航路飞行及目标搜寻，机组于11时24分发现目标渔船，通过绞车吊运的方式，先后将受伤渔民和1名陪同人员接至机舱，并开始返航。12时06分，救助直升机直落厦门大学附属翔安医院，将伤员转交医院救治。来源：厦门日报返回搜狐，查看更多责任编辑：
。
Current article:http://www.minpinpengcemiuanjiuxuan.pics/list_brclc2s/af1l.xls
Published on:19:16:37
