According to Xinhua news agency and others, some lunar samples collected by chang'e-5 were officially handed over. The lunar samples weighed 1731g. This also marks the beginning of China's first work on the storage, analysis and research of extraterrestrial objects, and the chang'e-5 mission has shifted from engineering implementation to scientific research.

The lunar samples brought back by chang'e-5 will be used for three purposes: first, scientific research; second, it will be displayed in the National Museum of Tibet for popular science education; third, according to international cooperation conventions and multilateral bilateral cooperation agreements, the lunar samples and data management measures will be shared with relevant scientists, and some samples may be sent as state gifts according to international practices.

There are many important roles in the study of lunar samples. It is of great significance to study the lunar surface interaction and lunar soil texture. The lunar sample stock is only 1731g, and part of the Lunar Sample for research purposes is unknown.
According to Zou Yongliao, director of the General Department of lunar and deep space exploration of the Chinese Academy of Sciences, it is of great significance to study the composition characteristics (rock type, mineral composition, chemical composition, etc.) of the sampling area, the interaction between lunar surface materials and solar wind, and the pedogenic mechanism of lunar soil.
In addition, according to the actual composition characteristics, if the collected samples are or produced from ancient plagioclase materials, it is also of great scientific value for the study of the early history of the moon; if the collected samples have or come from the basalt of the moon sea, it is of great value to the study of the lunar volcanism and even the thermal history; if the collected samples have the composition of impact breccia, they are of great scientific value to the study of the early history of the moon It is of great value to study the impact effect of the ball.

Good news in the morning! At 1:59, the lunar exploration project chang'e-5, carrying lunar samples, landed at Siziwang Banner landing site in central Inner Mongolia, marking the successful completion of China's first mission of sampling and returning extraterrestrial objects.

At about 1:00 a.m., Beijing aerospace flight control center injected high-precision navigation parameters into the chang'e-5 orbiter and reentry vehicle combination through the ground TT & C station. After that, the orbiter and the reentrant are usually unlocked and separated from the South Atlantic sea level at an altitude of about 5000 km, and then the orbiter completes the evasion as planned.

At 1:33 a.m., chang'e-5 entered the earth's atmosphere at a speed close to the second universe speed (about 11.2 kilometers per second), about 120 kilometers above the ground, and performed the first aerodynamic deceleration. After falling to a predetermined height, the retractor jumps out of the atmosphere and begins to slide downward after reaching the highest point. After that, the reentrant enters the atmosphere again and performs a second aerodynamic deceleration. When it descends to a height of about 10 km above the ground, the retractor opens the parachute to complete the final deceleration and maintain a stable attitude, and then lands smoothly in the predetermined area. The technicians who are responsible for the measurement, control and recovery of the search and recovery tasks will find the targets in time and carry out the recovery work in an orderly manner.

On December 3, the lifter ignited and took off and entered the orbit precisely. The rendezvous, docking and sample transfer with the orbiter and the reentrant assembly were completed on December 6. After that, separation and controlled lunar landing were carried out as planned. From December 12 to 16, the combination of the orbiter and the reentry vehicle separated from the orbiter and returned to earth on December 17 after completing two monthly earth transfer incident and two orbit corrections.

According to the plan, the recovered chang'e-5 reentrant will be airlifted to Beijing to open the cabin after completing the necessary ground treatment work, and take out the sample container and cargo. The National Space Administration will hold a handover ceremony at the right time and formally hand over the lunar samples to the ground application system. The first work related to the storage, analysis and research of extraterrestrial objects in China will also be started.

点击助手自动刷抖音使用效果视频，文末有福利要看完哦

链接: https://pan.baidu.com/s/1rWRHpphQgTYEdqZIiAdXfQ 密码: 8wwk

使用步骤

1.下载点击助手，来源于Googplay商店
Google Play 点击助手，自动刷快手极速版 抖音极速版自动赚钱神器，使用教程敬请期待
链接: https://pan.baidu.com/s/1P1jxMtluBSgNPWhCFTQn4w 提取码: isxj
更多精品GooglePlay APP参见：http://www.cnxiaocheng.top/android-best.html

2.打开授予权限

3点击开始服务
让观看视频，可以点击取消，忽略。

4.然后点击，录制按钮

5.然后按照自己的节奏，开始滑动屏幕
屏幕出现步骤的小球就是滑动的轨迹及幅度，如下图：

6.然后点击“完成”，点击保存按钮

7.下次想使用保存的手势，可以点开保存按钮，选择自己的配置开始自动化操作。

当然缩放等高级功能大家自己摸索吧！

本人微信入账部分截图

看看下载快手极速版免费赚钱吧，【下载地址】
或微信直接扫码下载：

微信 Android 版现已迎来 7.0.22 内测版更新，优化了一些已知问题。

目前，微信 Android 版已支持在设置中开启青少年模式，并可在会话的表情面板中搜索表情。其中，青少年模式开启后，使用微信小游戏、小程序、视频号、公众号、搜一搜、看一看等功能，会受到一些保护限制。

下载链接：

7.0.22 公开版本 （内部版本：654317072）：点此下载
文件MD5：
3405fd01d02f227243b772bbb74fbacd

微信内测android版本体验地址及常见问题

【点我直达】

核心代码如下

      List picList = new ArrayList();
        try{
            String basepath= ServletContextFactory.getServletContext().getRealPath("/");
            String path="userfiles/pics";
            File toSaveFile=new File(basepath+path);
            Collection<File> listFiles = FileUtils.listFiles(toSaveFile,"jpg".split(","),false);
            if(listFiles!=null && listFiles.size()>0){
                for (File file : listFiles){
                 picList.add(file.getName());
                }
            }
            
        }catch (Exception e){
            logger.error("得到文件夹下的所有指定格式文件列表异常",e);
        }

代码解析

1.String basepath= ServletContextFactory.getServletContext().getRealPath("/");
获取项目根路径地址。

2.Collection<File> listFiles = FileUtils.listFiles(toSaveFile,"jpg".split(","),false);
列出指定目录jpg格式的所有文件。false，代表不扫描子目录