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Portland pozzolan cement
eng.geol.
火山灰硅酸盐水泥
;
火山灰水泥
Portland-pozzolan cement
archit.
硅酸盐
火山灰水泥
hydroel.st.
硅酸盐火山灰水泥
;
波特兰火山灰水泥
Portland pozzolan cement
:
3 phrases
in 1 subject
Technology
3
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