|
- tube 和 pipe 的区别？ - 知乎
1 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 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 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 使用环境不同：tube用于
- Download the YouTube app - Android - YouTube Help - Google Help
Download the YouTube app for a richer viewing experience on your smartphone, tablet, smart TV, game console, or streaming device How to Sign In to YouTube on
- YouTube帮助 - Google Help
您可以在 YouTube 官方帮助中心找到各种提示和辅导手册，从中了解如何使用本产品以及其他常见问题的答案。
- YouTube Help
Learn more about YouTube YouTube help videos Browse our video library for helpful tips, feature overviews, and step-by-step tutorials YouTube Known Issues Get information on reported technical issues or scheduled maintenance
- Descargar la aplicación YouTube - Android - Ayuda de YouTube
Descarga la aplicación YouTube para disfrutar de una experiencia más completa en tu smartphone, tablet, smart TV, videoconsola o dispositivo de streaming Cóm
- Ayuda de YouTube Music - Google Help
Centro de asistencia oficial de YouTube Music donde puedes encontrar sugerencias y tutoriales para aprender a utilizar el producto y respuestas a otras preguntas
- Get a student discount for YouTube Premium or YouTube Music Premium
For help signing up for YouTube Premium, call us at +1 833-569-4334 If you're a student, you may be eligible for
- Add subtitles captions - YouTube Help - Google Help
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 Learn more about editing or removin
|
|
|