SpaceX CRS-20, also known as SpX-20, was a Commercial Resupply Services mission to the International Space Station (ISS) launched on 7 March 2020. [1] The mission was contracted by NASA and flown by SpaceX. It was the final flight of Dragon 1 and concluded the NASA Commercial Resupply Services (CRS-1) contract extension.

2024年1月30日 · Northrop Grumman's 20th commercial resupply services mission to the International Space Station will deliver scientific research, crew supplies, and hardware to the orbiting laboratory for NASA.

货运龙（Dragon CRS）是SpaceX设计和制造的可复用货运飞船，其主要目标是为国际空间站提供货物上下行能力。其国际空间站一般补给任务编号为Dragon CRS-X其中的CRS为Commercial Resupply Mission的缩写。

20Cr是一种钢的牌号, 为低 淬透性 渗碳钢。 大多用于制造心部强度要求较高，表面承受磨损、截面在30mm以下的或形状复杂而负荷不大的渗碳零件。 交货状态：以热处理（正火 、退火或 高温回火）或不热处理状态交货，交货状态应在合同中注明。

SunChaser's Geneva 20 CRS pontoon prioritizes both relaxation and fun on your next pontoon adventure. The standard features ensure a comfortable and enjoyable day for everyone on board this pontoon. Stretch out and soak up the sun on the spacious sun deck, a …

NDK NX3225SA-20.000M-STD-CRS-2参数名称：频率：20MHz；常温频差：±15ppm；负载电容：8pF；频率稳定度：±50ppm；等效串联电阻(ESR)：100Ω；工作温度：-40℃~+125℃。

Coverage of the rendezvous and capture of NASA’s Northrop Grumman CRS-20 at the International Space Station. Capture of Cygnus with the space station’s robot...

2024 SunChaser Geneva Cruise 20 CRS SUPERIOR QUALITY. A cruise model with room for 13 of your favorite people to catch some rays? Geneva has it. A sport edition for thrill rides? We’ve got that too. A layout to cast your line in your favorite fishing hole, or a blank canvas for you to craft your own dream boat? Geneva’s got you covered.

我在工作中遇到了几个国外的金属牌号,找不出对应的国内钢号,那位朋友能帮助一下,感谢了.这些牌号是:（1）20GACRS；（2）20GAEC；（3）16GACRS；（4）0... #热议# 在购买新能源车 …

Polysorbate 20 CRS. 产品编号： LY-EPY0002464 CAS ： 9005-64-5 英文名称： Polysorbate 20 CRS ...