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单词 spacer
释义 spac·er
I. \ˈspāsə(r)\ noun
(-s)
: one that spaces: as
 a. : a device or piece for holding two members at a given distance from each other
  < trucks which have spacers between dual tires — Motor Transportation in the West >
  < wood spacers holding the sides of a concrete form the proper distance apart >
  < when more than one layer of bars lies at the bottom of a beam or girder the layers are separated by spacers — Theodore Crane >
 b. : a person or machine that spaces ties at proper intervals in railroad track
 c. : a current-reversing device used especially in cable telegraphy to increase speed of transmission
 d. : space bar
II. noun
: a region of chromosomal DNA between genes that is not transcribed into messenger RNA and is of uncertain function
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更新时间:2025/3/20 16:32:29