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calcium
 calcium
gen.
agric.
avia.
earth.sc.
environ.
met.
space
| aluminum-silicon alloy
 aluminum silicon alloy
mech. 硅铝合金

to phrases
calcium ['kælsiəm] n
gen. 第20号元素
agric. (Ca,20 号元素)
avia. 【化】钙 (化学元素,符号 ca)
earth.sc. 化学元素
met. (Ca)
space (化学元素,符号 Ca)
tech.
calcium A malleable silvery-white metallic element of the alkaline hearth group; the fifth most abundant element in the earth crust, occurring especially as forms of calcium carbonate. It is an essential constituent of bones and teeth and is used as a deoxidizer in steel ['kælsiəm] n
environ. (一种具有延展性的银白色碱金属元素,在地壳中含量排第五,通常以碳酸钙的形式存在。它是骨骼和牙齿的基本成分,并且用来作钢铁的还原剂。)
calcium: 1625 phrases in 52 subjects
Agriculture108
Animal husbandry82
Architecture17
Automobiles6
Bridge construction2
Business1
Chemistry140
Compressors1
Construction1
Dentistry1
Dermatology6
Desert science9
Drilling16
Earth sciences17
Ecology5
Electric machinery3
Electronics23
Engineering geology29
Environment1
Explosives and Explosive Ordnance Disposal2
Food industry49
Food service and catering9
General18
Genetics2
Geology6
Geophysics6
Hydroelectric power stations7
International trade2
Life sciences6
Medical1
Metallurgy120
Milk production1
Molecular genetics1
Nautical2
Nursing3
Oil / petroleum70
Perfume4
Pharmacology397
Plastic surgery5
Plastics16
Polygraphy2
Polymers2
Rail transport2
Refrigeration5
Reproductive biology4
Shipbuilding2
Space3
Sports9
Surgery6
Technology385
Textile industry3
Water resources7