The Science of Bubbles (Full Science Documentary) | Spark 此处链接youtube视频源
本站成功迁移至Ubuntu Server
原配置：Windows Server 2016 + IIS10 + MySQL + PHP7.2 现配置：Ubuntu Server 20.04 LTS + Nginx + MySQL + PHP7.4 时隔4天，历经各种坑。 wordpress 的站点配置写于数据库中（wp_options数据表中），因此迁移后网站需要手动在修改数据库部分行，如站点url，及部分文件路径。 Nginx 作为反向代理，其配置问题。如HTTPS的配置等。 MYSQL数据库使用mysqldump命令即可迁移，适用于数据量较小的情况。 伪静态。迁移前使用插件完成Url重写，目前Url重写由Nginx完成。 将asp.……Read More
评论功能优化
评论优化前，部分用户通过评论插入恶意链接。 优化前超链接采用如下形式： <a href=’$url’ rel=’external nofollow ugc’ class=’url’ ></a> 经2021/07/16日优化后：超链接形式改为 <a name=’$url’ rel=’external nofollow ugc’ class=’url’ ></a> 如需查询评论者网站，请采用网站开发者工具自行查找。
Lesson3 Coal Assay
Coal assay techniques are specific analytical methods designed to measure the particular physical and chemical properties of coals. 煤质分析技术是专门用来测量煤的特定物理和化学性质的特定分析方法。 These methods are used primarily to determine the suitability of coal for coking, power generation or for iron ore smelting in the manu……Read More
Lesson3 Part1
Coal Assay Coal assay techniques are specific analytical methods designed to measure the particular physical and chemical properties of coals. 煤质分析技术是专门用来测量煤的特定物理和化学性质的特定分析方法。 These methods are used primarily to determine the suitability of coal for coking, power generation or for iron ore smelting ……Read More
From rocks to icebergs, the natural world tends to break into cubes
Perhaps the Cubists were right. Researchers have found that when everything from icebergs to rocks breaks apart, their pieces tend to resemble cubes. The finding suggests a universal rule of fragmentation at scales ranging from the microscopic to the planetary. 也许立体主义者是对的。研究人员发现，当他们发现的每一块冰山都像冰块一样破裂时……Read More
China’s successful launch of Mars mission seals global era in deep-space exploration
中国成功发射火星飞行器标志着全球深空探索的时代来临 Tianwen-1 is the second of three spacecraft set to take off this month for the red planet. 天问一号是本月为这颗红色星球发射的三架航天器中的第二架。 Tianwen-1 is scheduled to arrive at Mars in February. A Chinese spacecraft is on its way to Mars after launching successfully from Hainan Island in southe……Read More
Solar Orbiter: Closest ever pictures taken of the Sun
太阳轨道探测器：有史以来最接近太阳的照片 The arrow points to a “camp fire”. The circle at bottom-left gives an indication of size 箭头指向“篝火”。 左下角的圆圈表示尺寸 New pictures of the Sun taken just 77 million km (48 million miles) from its surface are the closest ever acquired by cameras. 新拍摄的太阳照片距离太阳表面只有7700万公里（4800万英……Read More
New video format ‘halves data use of 4K and 8K TVs’
新的视频格式“将4K和8K电视的数据使用量减少一半” Although 8K televisions are becoming more common, there is currently little content available in that resolution 尽管8K电视正变得越来越普遍，但目前该分辨率的内容很少 A new video-encoding technology that promises to cut data use by at least half has been announced, after three years of talks involv……Read More
Street traders losing ‘right to shade’ under trees
街头商贩失去树下“荫蔽权” The daytime temperatures in Hyderabad can exceed 40C (100F), making shade from trees essential 海得拉巴的白天温度可能超过40°C（100°F），因此树木遮荫必不可少 Street vendors are being denied the “right to shade” under street trees in Hyderabad, India, a study suggests. 一项研究表明，在印度海得拉巴的街头树木下，街头小贩被剥夺了“遮荫……Read More