through-put volume

The major shortcoming of pressure swing adsorption technology was too difficult to get qualified ethylene through one time separation, the ethylene purity under general condition was 80% ( volume fraction), if high purity ethylene was produced with supplemental combination technology, the investment would be increased;

变压吸附的主要缺点是难以通过一次分离得到聚合级乙烯，一般条件下得到的乙烯纯度为80%（体积分数），如采用配套组合工艺生产高纯度乙烯，投资相应增大；

It has taken a long time to wade through the "incredible volume" of evidence.

看完这一大卷“长篇累牍”的证词花费了很长的时间。

It has taken a long time to wade through the 'incredible volume' of evidence

看完这一大卷“长篇累牍”的证词花费了很长的时间。

In this article, the traffic volume time series of city centre is studied through the R/ S analysis and fractal Brownian motion so as to achieve the premise of traffic inducement and control.

为了能够为城市中心区实施短周期交通诱导与控制创造前提条件，本文运用R/S分析方法与分数布朗运动模型研究了城市中心区交通量时间序列。

A unique 13,000-word timeline runs through the full-colour volume, detailing events from the Earth's creation to the present day.

一份独一无二的 13,000 词的年表贯穿彩印卷的始终，详细记述了从地球诞生到今天发生的重大历史事件。