单词：calcar
calcination of sand and potash, and converting them into frit.
n. A hollow tube or spur at the base of a petal or corolla.
n. A slender bony process from the ankle joint of bats, which
helps to support the posterior part of the web, in flight.
n. A spur, or spurlike prominence.
n. A curved ridge in the floor of the leteral ventricle of the
brain; the calcar avis, hippocampus minor, or ergot.
calcar的用法和样例：
例句
- The improvements of Calcar Temperature Control System is under way.氧化炉温度控制方案的技术改进正在进行。
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