constant quantity
英 [ˈkɒnstənt ˈkwɒntəti]
美 [ˈkɑːnstənt ˈkwɑːntəti]
恒量；常数
英英释义
noun
- a quantity that does not vary
双语例句
- It is indicated that the frequently occurring cancer region lacks or severely excessively has some kinds of small quantity of elements, apart from serious pollution of water and soil and anomalous constant quantity of composition.
表明癌症高发区除水土严重污染，许多常量成份出现异常外，一些微量元素还明显缺少或严重超量。 - It describes system hardware structure, operation process and controlling means, and how to control with harmony between these devices in detail. It realizes constant voltage automatic control supporting water, and improves the quantity of supporting water.
详细论述了系统硬件结构、操作流程和控制方法，以及各器件之间的协调控制方法，实现了对供水的恒压自动控制，提高了供水质量。 - Basing on the permeating power of helium through glass, we have derived the dynamic equation for the pressure of He in a He-Cd laser and the replenishing equations for replenisher of He at constant temperature and constant quantity.
根据玻璃渗氦特性，导出了氦&镉激光器氦气压动态方程，氦补充器恒温补充方程和恒量补充方程。 - The addition of drag reduction agent improves transport capacity greatly, reduces transport cost, makes flexible transport of oil possible and reduces bearing pressure of old pipeline in constant flow quantity.
减阻剂的使用大大提高了管道运输的能力，降低了运输成本，使得油品弹性运输成为可能，减小了恒定流量老化管道承受的压力。 - The relation between optimizing rural industrial structure and rural economic constant development is illustrated from the point of quantity and quality.
通过从定性与定量两个角度阐明了农村产业结构优化与农村经济可持续发展的互动关系。 - Reasonable temperature control of strict science is key that the constant temperature cold storage assurance merchandise stores the quantity.
规范合理，严格科学的温度控制是恒温冷库保证商品储藏质量的关键。 - If you have a quantity which is constant over any closed path, that quantity is a thermodynamics state function.
如果有一个物理量，对任何闭合回路积分是常数，这个物理量就是一个热力学态函数。 - Applying the mass heat capacities at constant pressure to heat balance calculation, the recycle quantity of reaction mixture, an important design parameter of continuous esterification reactor, and the mass of heat medium were acquired.
把质量定压热容应用于热平衡计算，求得了连续酯化反应器的重要设计参数：循环量和加热器中加热介质的进料量。 - According to some disadvantages in the disposal process of the perturbation method, the concepts of perturbation quantity, constant quantity and stepwise disposal have been introduced.
本文针对目前电磁理论微扰法处理中的某些不足，提出微扰量、不变量和逐级处理这三个概念。 - Though the most rigorous arable land protection system is adopt in China, there are still many problems in the arable land utilization and management, while constant quantity decrease and overall quality degradation represent the major ones.
尽管我国有着世界上最严格的耕地保护制度，但是，当前我国的耕地利用与管理存在诸多突出问题，主要表现为耕地数量不断减少和耕地质量总体水平下降。