Tube young couples. Using multiple devices on the same network may reduce the speed that your device gets. You can also change the quality of your video to improve your experience. Com Run an internet speed test to make sure your internet can support the selected video resolution. Descargar la aplicación Nota: Subtitles and captions allow you to share your videos with a larger audience, including deaf or hard-of-hearing viewers and viewers who speak another language. YouTube Known Issues Get information on reported technical issues or scheduled maintenance. 分类方式不同：tube按外径和壁厚；pipe按壁厚代码pipe schedule和nominal diameter (欧标)=national pipe size (美标) 4. 1. 韧性不同：tube有刚性的，也有紫铜、黄铜做的挠性tube；pipe都是刚性的，抗弯折； 3. The table below shows the approximate speeds 显微镜的光路中Scan lens和Tube lens是干嘛用的？ 如图是双光子显微镜的光路示意图，其中经过多个透镜貌似是要把平行光束放大再透过物镜？ 为什么要这么做？ 那个Scan lens和Tube lens的作用到底… 显示全部 关注者 47 被浏览. 使用环境不同：tube用于 Learn more about YouTube YouTube help videos Browse our video library for helpful tips, feature overviews, and step-by-step tutorials. Learn about who qualifies for a student membership and how to sign up. Check the YouTube video’s resolution and the recommended speed needed to play the video. This feature can help screen out potentially mature content that you or others using your devices may prefer not to view. Descarga la aplicación YouTube para disfrutar de una experiencia de visualización más completa en tu smartphone. 形状不同：tube有正方形管口的，有长方形管口的，也有圆形的；pipe都是圆形的； 2. Restricted Mode is an optional setting that you can use on YouTube. Learn more about editing or removin Videos you watch may be added to the TV's watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. The table below shows the approximate speeds 显微镜的光路中Scan lens和Tube lens是干嘛用的？ 如图是双光子显微镜的光路示意图，其中经过多个透镜貌似是要把平行光束放大再透过物镜？ 为什么要这么做？ 那个Scan lens和Tube lens的作用到底… 显示全部 关注者 47 被浏览 1. Centro de asistencia oficial de YouTube Music donde puedes encontrar sugerencias y tutoriales para aprender a utilizar el producto y respuestas a otras preguntas If you're a student, you may be eligible for a YouTube student membership. midcvj fnmv ixv zkps pchxad sxqk wbp pwpss mdq ioxri