But this means that a second in the French Republican system actually works out to a little less than one and a half SI seconds, meaning that a modern timekeeping computer needs to do a little more math to display the correct time at the correct interval. [ClassTech] is using a Particle...
22、itions given in ISO 5408 apply.3.2 SymbolsFor the purposes of this document, the following symbols apply.Symbol MeaningD basic major diameter of internal threadD1basic minor diameter of internal threadD2basic pitch diameter of internal threadd basic major diameter of external threadd1basic mi...
S y mb ol Meaning D basic major diameter of internal thread D 1 basic minor diameter o 23、f internal thread D 2 basic pitch diameter of internal thread d basic major diameter of external thread d 1 basic minor diameter of external thread d 2 basic pitch diameter of external thread d 3...