To ensure accurate and reliable value of a quantity transfer, the improvement method is proposed so as to reduce misjudgment of calibration results.

为了保证量值传递准确可靠，减小这种不确定性对校准结果造成的误判，对现场校准提出了改进方法。

youdao

The basic definition-- the expected value of some random variable x--E--I guess I should have said that a random variable is a quantity that takes on value.

最基本的定义,某一个随机变量X的期望值E,我应该提到过,随机变量是一个可以取值的数

耶鲁公开课 - 金融市场课程节选

The fact that a 21 percent increase in the value of the Yuan was met with a 38.7 percent increase in import value means that the quantity of Chinese imports demanded increased by nearly 15 percent after the price change.

FORBES: Economists Ignore the Facts in Supporting Chinese Currency Legislation