echard

n. [农](土壤中的)无效水量

发音

/ˈɛkˌɑː(ɹ)d/

词形变化

echards 复数 echards

释义与例句

n.
  1. 1.

    The portion of water in a sample of soil that is not available to vegetation.

    过时

词源

From Ancient Greek ἔχω (ékhō, “to hold”) + ἄρδω (árdō, “to water, to irrigate”).

来源：wiktionary