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返回课程 ASD-STE100（简化技术英语）规则部分Rule 2.2 When a technical name has more than three words, write it in full. 规则2.2当技术名称超过三个单词时，全文写出来。

Then you can simplify it as follows:

- Give a shorter name

or

- Use hyphens (-) between words that are used as a single unit.


A long noun cluster can be a technical name on its own or it can be a combination of shorter technical names. Frequently, it is not possible to divide them into smaller parts (because they are part of company nomenclature) and you must write them as they are.


Shorter names

If a long technical name comes from an official document (for example, an engineering drawing or an illustrated parts catalog), write it in full the first time that it occurs in the text. Then, if possible, in the remaining text of your document, use a shorter name or its approved abbreviation.

Examples in STE:

Before you do this procedure, engage the ramp service door safety connector pin
(the pin that holds the ramp service door, referred to in this procedure as the “safety connector pin”).

The Main Fuel Metering Unit (MFMU) is an aluminum alloy unit that includes a Main Engine Control Unit (MECU) and a Distribution Block (DB). The MFMU is installed in the engine bypass duct and operates in the engine fuel system. The MFMU function is to meter and distribute the fuel from the Main Engine Fuel Pump (MEFP) to the fuel manifolds and starter jets. The Digital Engine Control Unit (DECU) sends electrical signals to operate the MFMU.


In the first example, you write “ramp service door safety connector pin” in full. Then, after an explanation, you give a shorter name: “safety connector pin.” This shorter name has three words and obeys rule 2.1.


In the second example, the explanation is not necessary because the text gives all the necessary information about the unit. All official technical names that have more than three nouns are written in full the first time that they occur. Then, in the remaining parts of the text, the related approved abbreviations are used.


Hyphens (-)

A hyphen is a punctuation mark that connects words or parts of words. You can use hyphens between words to show how related words function as one unit.


Examples in STE:

Make sure that the landing-light cutoff-switch power connection is safe.
Inspection of the lavatory rapid-decompression device.


Make sure that you do not connect words which are not related, because this will change the meaning of the noun cluster. If you are not sure, only explain the noun cluster. Then, use a shorter version, or an official approved abbreviation.


If a technical name from company nomenclature includes hyphens, do not change it. If it is too long, write it in full the first time it occurs and then use the recommended method specified in this rule.


Do not hyphenate groups of more than three words. It does not help your reader to understand the noun cluster if you hyphenate all of the words in it:


Example:

Non-STE: Main-gear-door-retraction-winch handle.
STE: Main-gear-door retraction-winch handle.

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