tufa
英 [ˈtjuːfə]
美 [ˈtufə]
网络 凝灰岩; 总不饱和脂肪酸; 钙华; 石灰岩; 石灰岩柱
复数：tufas
BNC.40028 / COCA.42389
英英释义
noun
- hard volcanic rock composed of compacted volcanic ash
- a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
双语例句
- A STUDY ON BIOGENETIC OF CALCAREOUS TUFA& Examplified by the tufa in Jiuzhaigou, Sichuan, and Huangguoshu, Guizhou
石灰华的生物成因研究&以四川九寨沟和贵州黄果树等地石灰华为例 - A special tufa fabric-stratified-algae-support fabric and the cause of its formation
一种特殊的石灰华组构&层状藻支架组构及其成因 - So, the appropriate geochemical condition and the advantaged water dynamic condition compose the growth of the tufa of Wang 4 well.
王4井的地热流体正是具备了合适的水化学条件，同时伴随着有利的水动力条件才生成了我们所看到的钙华。 - These pale gray and ivory "tufa towers," located in California's Mono Lake, may look like eerie art instillations, but they occur naturally and are made of limestone.
这些浅灰色和象牙形的“钙华塔”，位于美国加州的莫诺湖，它们可能看起来像是令人毛骨悚然的艺术灌注物，然而它们是在自然界里由石灰岩所构成的。 - Characteristics of ancient tufa and its prospecting signifcance in Northwest Hunan
湘西北地区的古硅华特征及其找矿意义 - Deep-source co_2 in natural waters and its role in extensive tufa deposition in the Huanglong ravines, sichuan, China
四川黄龙沟天然水中的深源CO2与大规模的钙华沉积 - Bio-effect on Tufa Deposition
钙华沉积的生物效应 - The delicate white tufa towers formed where freshwater springs percolate up from the bottom of the lake.
柔和、白色的钙华塔形成于淡水泉从湖底渗透出来的地方。 - Tufa is a good carrier which records the information of palaeoclimate-environment, and has the unique superiority: ( 1) The resolution is high, may achieve the resolution of season or month.
钙华是记录古气候环境信息的良好载体，并有独特的优势：①分辨率高，可达到季-月的高分辨率。 - According to previous researches, tufa results from the supersaturation of calcium carbonate, as the partial pressure of CO_2 in the spring water is higher than that in the atmosphere and CO_2 outgases from the water.
根据研究，钙华的形成是由于泉水中的CO2分压高于周围空气的CO2分压，CO2从水中逸出，因而导致碳酸钙发生过饱和并产生沉淀的结果。