Tham khảo tài liệu 'the ama handbook of business writing phần 2', ngoại ngữ, kỹ năng nghe tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 40 The AMA Handbook of Business Writing When abbreviating inches you need a period to avoid confusion with the word in. Use periods for lowercase abbreviations such as . and . Common long phrase abbreviations do not use periods such as mph mpg or rpm. When an abbreviation with periods ends a sentence the period for the abbreviation is used as the sentence period. Academic degrees can be written with or without periods. Example MBA or BS or . People s initials should include a period and space. Example T. R. Smith Don t let line breaks come in the middle of someone s initials. Guidelines for Using Abbreviations in Your Writing When introducing an abbreviation into your writing spell out the term the first time it is used followed by the abbreviation in parentheses. Example cash on delivery COD Use the abbreviation alone after the initial definition. Do not follow an abbreviation with a word that is included in the abbreviation. Incorrect ATM machine Correct ATM To form the plural of an abbreviation or acronym add a lower case s. Do not add an apostrophe. Do not make up abbreviations to save space in your business documents. Section 2 The Business Writer s Alphabetical Reference 41 Abbreviations for Measurements You can use abbreviations for common measurements when space is limited or when the measurements appear in a table. Table lists the common abbreviations for measurements. Table Common Abbreviations for Measurements Measurement Abbreviation Bits per second bps centimeters cm degrees or deg dots per inch dpi feet ft or gigabits per second Gbps gigabytes GB gigahertz GHz grams g Hertz Hz hours hr inches in or kilobits per second Kbps kilobytes KB kilobytes per second KBps kilograms kg kilohertz kHz kilometers km lines li megabits per second Mbps megabytes MB continues 42 The AMA Handbook of Business Writing Table continued Measurement Abbreviation megabytes per second MBps megahertz MHz meters m miles mi millimeters mm milliseconds .
