英语词汇“bottom bed”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

bottom bed n. (a name for) the rock stratum which is the lowest that is generally worked in the quarries of a particular district; (more widely) the lowest stratum of a rock formation.

ΚΠ

1802 W. Tighe Statist. Observ. County Kilkenny i. 100 The half moon and the bottom bed are reckoned among the best [kinds of marble].

1842 Trans. Royal Inst. Brit. Architects 1 ii. 158 Some of the bottom-bed Portland is so soft to work, beautifully fine-grained, and homogeneous, that it may be considered equal to..any of the superior free stones that are now so often used for Gothic monuments.

1987 C. Durrell Geologic Hist. Feather River Country iii. 71 (caption) The fold is evident in the configuration of the bottom bed (the basal conglomerate) of the Sierra Buttes Formation.

单词	bottom bed
释义	> as lemmas bottom bed bottom bed n. (a name for) the rock stratum which is the lowest that is generally worked in the quarries of a particular district; (more widely) the lowest stratum of a rock formation. ΚΠ 1802 W. Tighe Statist. Observ. County Kilkenny i. 100 The half moon and the bottom bed are reckoned among the best [kinds of marble]. 1842 Trans. Royal Inst. Brit. Architects 1 ii. 158 Some of the bottom-bed Portland is so soft to work, beautifully fine-grained, and homogeneous, that it may be considered equal to..any of the superior free stones that are now so often used for Gothic monuments. 1987 C. Durrell Geologic Hist. Feather River Country iii. 71 (caption) The fold is evident in the configuration of the bottom bed (the basal conglomerate) of the Sierra Buttes Formation. extracted from bottomn.adj. < as lemmas
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