请输入您要查询的英文单词:

 

单词 petersen grab
释义

Petersen grabn.

Brit. /ˈpiːtəs(ə)n ˌɡrab/, U.S. /ˈpidərs(ə)n ˌɡræb/
Origin: From a proper name, combined with an English element. Etymons: proper name Petersen , grab n.2
Etymology: < the name of Carl Georg Johan Petersen (1860–1928), Danish marine biologist, who invented it + grab n.2Petersen first described the grab in 1911 ( Rep. Danish Biol. Station 20 47).
A kind of mechanical grab for obtaining a sample of the bed of a body of water, consisting of two jaws semicircular in vertical cross-section and hinged along the top, arranged so as to close automatically on contact with the bottom.
ΘΚΠ
society > occupation and work > equipment > other specific types of equipment > [noun] > equipment for use on seabed
creeper?a1400
tangle1882
creep1889
Petersen grab1923
snapper grab1925
sled1939
piston sampler1946
piston core sampler1947
piston corer1954
hydrocast1960
1923 Sci. Investigations, 1922 (Fishery Board Scotland) iii. 1 (title) Preliminary survey of the Scottish waters of the North Sea by the Petersen grab.
1950 Biol. Rev. 25 309 The Petersen grab will only produce reliable results on the softer bottoms.
1970 tr. J. Schwoerbel Methods Hydrobiol. iv. 118 In larger rivers the Petersen grab can be used... The grab weighs 40 kg.
1999 Continental Shelf Res. 19 775 A total of 111 Petersen grab sediment samples..were analyzed.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
<
n.1923
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/20 5:06:37