市面上常说的45号钢材是什么？ - 知乎
45号钢材应用范围如下： 山东巨特管业45号无缝钢管 适用于制造较高强度的运动零件，如空压机、泵的活塞、蒸汽涡轮机的叶轮，重型及通用机械中的轧制轴、连杆、蜗杆、齿条、齿轮、销子等。 用于 …
9mm和.45有什么区别，为什么围绕这两种口径争论不休？
Jan 18, 2013 · 9mm Luger是德国在1902年发明的规格，所以9mm也被.45的忠粉叫做纳粹的子弹（虽然纳粹是在1933年take over德国的）。 讨论.45和9mm哪个好有时候就像在讨论美国车和德国车哪个 …
45#钢做什么表面处理不会生锈？ - 知乎
45号钢表面处理主要是防锈，可分为两种，物理性防锈和化学性防锈； 物理防锈又分为：喷油或涂油、喷防锈漆、电泳漆、 PVD 等等； 化学防锈又分为： 化学钝化防锈 、磷化防锈、电镀防锈等等； 根 …
For those who carry .45 ACP what load do you run? - Reddit
Jul 23, 2023 · I have seen comparisons of different hollow points performance, not .45 acp specific, that really revealed how much hollow point performance is velocity dependent. Even higher velocity than …
HK45 with +P to 45 Super Ammo : r/HecklerKoch - Reddit
May 12, 2023 · Has anyone had experience shooting +P or 45 Super ammo in the full size HK45? The operators manual says it can handle +P and +P+. It does warn the this will have added wear to the …
Deciding between a Glock 45 and Glock 47 for first Glock
Aug 15, 2023 · Deciding between a Glock 45 and Glock 47 for first Glock Basically just the title. I’m going to be picking up my first Glock in the next few weeks. Based on the research I have done I’m …
45PlusSkincare - Reddit
Subs like r/SkinCareAddiction and r/30PlusSkinCare are iconic, but a specific sub for 45+ skincare and beauty is a great addition to the community.
.45, huh? : r/CopyPastas - Reddit
Nov 19, 2017 · .45 huh? Incredible. The feeding ramp is polished to a mirror sheen... The slide's been reinforced, and the interlock with the frame is tightened for…
Is there any way to get sounds longer than 45 seconds? - Reddit
Dec 26, 2023 · Hey u/stcifttm! Unfortunately, in case you're uploading them directly to Tuna platform, then you'll find this 45 sec. maximum limit for your uploaded audios. However, as …
初三三角函数锐角 30°、60°、45° 的 cos、tan、sin 速记技巧，并且不 …
sin 30°＝cos60°＝½ sin60°＝cos30°＝√3／2 sin45°＝cos45°＝√2／2 tan 45°＝1 tan30°＝√3／3 tan60°＝√3 其实sin30，45，90和cos30,45,60数值的顺序是相反的，3倍tan30°＝tan60° tan45°的图 …