I was unable to find a description of how the blanking periods worked in System 3. However, frustratingly, despite being the main citation, System 3 is not the CBS color system that was adopted in 1951! The first citation I could find proving this was this 1951 Radio and Television News article, transcribed here. But yes, this was a 144Hz system! Presumably that adjustment was made after 1942.
30% of x86 CPUs sold are now made by AMD, as company's market share grows thanks to a flagging Intel
，详情可参考新收录的资料
The Quds Force works heavily with Iran’s allied militant groups in the region.。新收录的资料对此有专业解读
A long-standing concern。新收录的资料是该领域的重要参考