| 单词 | 固定量 |
| 释义 | 〔hourglass〕An instrument for measuring time, consisting of two glass chambers connected by a narrow neck and containing a quantity of sand, mercury, or another flowing substance that trickles from the upper chamber to the lower in a fixed amount of time, often one hour.沙漏；滴漏：用于计时的仪器，由两个玻璃盒组成，中由一细颈相连，盒内装有一定量的沙子，水银或其他流动物质，这些物质在一固定量的时间里，通常为一个小时，从上方的盒内慢慢流入下方的盒子中〔unit〕A fixed amount of scholastic study used as a basis for calculating academic credits, usually measured in hours of classroom instruction or laboratory work.上课时量，计算学分的学习量：学术研究的固定量，用作计算专科院校学分的基础，通常按教室教育或实验室工作的小时测量〔allowance〕To dispense in fixed quantities; ration.定量，配给供应：以固定量分配；配给 |
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