macOS Sequoia 15 有必要更新吗？ - 知乎
现在的macOS Sequoia 15.4可以更新。 一、给intel芯片的MacBook参考 手头有一台MacBook Air 2020（intel i3 + 8G +256G），末代Intel中的丐版，在还能升级macOS 15.4的设备里面是垫底 …
知乎 - 有问题，就会有答案
知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业 …
ar15.com - Your Firearm Resource. (AR-15, AR-10, M4, M16, AK …
Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.
General Community > AR15.COM
Aug 13, 2025 · Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.
请系统性地解释鹰击12，鹰击15，鹰击17，鹰击18，鹰击20和鹰 …
鹰击15和12是一脉相承的，12是从毛子引进的日炙改良的，进气道改加莱特，雷达导航等电子设备全部升级国产。 20、21都源自20年前火箭军的弹道导弹打航母DF21D，YJ21是轰6机载版 …
General Discussion > AR15.COM
1 day ago · Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.
Equipment Exchange Community > AR15.COM
Nov 8, 2022 · Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.
Legit super safety options and what to modify to be reliable?
Jul 2, 2025 · Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.
16：9的15.6英寸和17.3英寸屏幕长宽各是多少? - 知乎
16:9是长宽比，设长x宽y 15.6英寸指的是屏幕对角线长度，1英寸≈2.54厘米， 15.6英寸≈39.6cm ， 17.3英寸≈43.9cm ， 或者直接拿尺子量实物，印证下是不是这么回事。这个15.6英寸是实际 …
Opinions on Bear Creek Arsenal? > AR Discussions > AR15.COM
Feb 19, 2025 · Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.