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pyroxylin    
n. 硝酸纤维素;绵火药

硝酸纤维素;绵火药

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  • Looking for the most common abbreviation to indicate the end of a . . .
    Wikipedia (End of Day) uses COB, but Googling didn't give much info about its usage EDIT: Context on where I would use it is writing (e-mail) I communicate with different teams in different time zones and it would be a handy way to let people know they don't need to expect a quick response from somebody because that person has already left
  • punctuation - Are y, m, and d the singular and plural . . .
    It was a 5-year, 2-month and 18-day project You've said It was 'a', so you must use the singular form Now to the big question Is your usage acceptable? Well, there two things I'd see here: Context; Information format; If for example, you want to write this format of y, m and d in a computer-generated report, there's no problem
  • abbreviations - Should days be abbreviated when in the context of . . .
    The abbreviation for day is "d" 2wk 3d This abbreviation is rarely used, however is considered acceptable in certain contexts, one being when used in conjunction with other time abbreviations
  • Single word for the estimated time of completion
    Start date, end date Start time, end time Target date, actual complete date, etc Usually what each of these specifically mean is defined at the start of a project, so that everyone uses consistent language, to avoid confusion Note: quite a few project websites use ‘finish date’ I much prefer ‘complete date’
  • Is there an abbr. for Up To Today Date like YTD?
    People will usually recognise the meaning of "Year TD", and by extension they would recognise "Month TD" or "Week TD" But "TD" would not normally be used on its own, and as you say, the full phrase is "year to date" (apparently a shortened form of "from the beginning of the year to the current date" –
  • word choice - What are the abbreviations for days of the week . . .
    I would like to know if there is a common abbreviation for days of the week in a two letter form I mean: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday; can be abbreviated as Su, Mo, Tu, We, Th, Fr, Sa? Is this the common form? Note that I have also seen Sn for Sunday, and some times St for Saturday (but I think less frequently)
  • abbreviations - How do you write and in very short form? - English . . .
    Is there a short form of and aside from amp;? For instance, w o is a short form of without I used to write it but I forgot since I don't live in the US
  • by the end of or by end of - English Language Usage Stack Exchange
    I have looked 'end' up in the BBI Combinatory Dictionary of English, but it gives only 'by the end of the year" without further comments I ask because I have a feeling that 'by the end' is used about the past (e g I managed to get it done by the end of August) and 'by end of' about the future (e g the report must be handed in by end of
  • time - What is the official abbreviation of week? - English Language . . .
    As KarlG and Barmar suggest, "wk" is a common abbreviation So common, in fact, that if you look that up, you get:





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