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trass

n. 火山土

火山土

The Collaborative International Dictionary of English v.0.48 (gcide)

Trass \Trass\, n. [D. tras or Gr. trass, probably fr. It.
terrazzo terrace. See {Terrace}.] (Geol.)
A white to gray volcanic tufa, formed of decomposed trachytic
cinders; -- sometimes used as a cement. Hence, a coarse sort
of plaster or mortar, durable in water, and used to line
cisterns and other reservoirs of water. [Formerly written
also {tarras}, {tarrace}, {terras}.]
[1913 Webster]

Note: The Dutch trass is made by burning and grinding a soft
grayish rock found on the lower Rhine.
[1913 Webster]

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英文字典中文字典相关资料:

Trass - Wikipedia
Trass is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar It is a grey or cream-coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff
What Is TRASS? - ROMEX
Trass is a naturally occurring mineral celebrated for its pozzolanic properties — meaning it reacts chemically with cement to produce a stronger, denser, more durable mortar matrix
TRASS definition and meaning | Collins English Dictionary
Definition of 'trass' trass in British English (træs ) noun a variety of the volcanic rock tuff, used to make a hydraulic cement
TRASS Definition Meaning - Merriam-Webster
The meaning of TRASS is a light-colored volcanic tuff resembling pozzolana in composition and occurring especially on the lower Rhine where it is ground for use in a hydraulic cement
trass - definition and meaning - Wordnik
There are many deposits of natural volcanic pozzolana or trass in Java, which, when mixed with locally produced lime, gives a hydraulic cement
TRASS Definition Meaning | Dictionary. com
TRASS definition: a light-colored type of volcanic tuff used in making water-resistant cement and mortar See examples of trass used in a sentence
Chemistry:Trass - HandWiki
Trass is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar It is a grey or cream-coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff
ROMEX® Trass Bed Compound | Paver Bedding
TRASS eliminates paver shifting, rutting, creep, dips, and aspect ratio issues, making large-format pavers driveway-friendly Suitable for all applications including driveways, patios, walkways, pool decks, streets, public spaces and is fully compatible with radiant heat systems
trass - Wiktionary, the free dictionary
Noun trass (countable and uncountable, plural trasses) (geology) A white to grey volcanic tufa, formed of decomposed trachytic cinders, sometimes used as a cement A coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water
ROMEX® TRASS BED
This frost-resistant permeable paver bedding is formed by mixing levelled, our thin-set product is applied on the back of each paver to form a wet-on-wet, bonded connection with the TRASS BED that eliminates paver movement

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