tufa中文什么意思

n.
【地质学；地理学】华；石灰华，泉华。adj.
-ceous

• algal tufa:    藻华
• calc tufa:    石灰华
• calc-tufa:    n. 【化学】石灰华。

例句与用法

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1. Discussion on engineering characteristics of tufa in kaili perfecture
   凯里地区石灰华的工程特性探讨
2. Spires of limestone tufa rise from the shores of california ' s mono lake
   在加州莫诺湖边，耸立着一座座石塔。
3. The floristic characteristics of tufa bryophytes and the main travertine deposition types in uk
   英国钙华苔藓植物区系特征及其主要钙华沉积类型
4. Tufa form when underwater springs rich in calcium meet lake water rich in carbonates , forming calcium carbonate , or limestone
   由于地下水富含钙，而湖水又富含碳酸盐，于是两者接触便产生出碳酸钙，即石灰石。
5. Mono lake ' s tufa are particularly dramatic because water diversions have significantly lowered the lake ' s level , exposing more of the columns
   莫诺湖之所以会出现如此独特的景致，是因为分洪使得湖水水位降低，从而露出了更多的石柱。

英文释义

名词

1. hard volcanic rock composed of compacted volcanic ash
   同义词：tuff
2. a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
   同义词：calc-tufa

百科释义

Tufa is a variety of limestone, formed by the precipitation of carbonate minerals from ambient temperature water bodies. Geothermally heated hot-springs sometimes produce similar (but less porous) carbonate deposits known as travertine.