* The behavior of a fluid flowing through a pipe is affected by a number of factors, including the viscosity of the fluid and the speed at which it is pumped.

流體在管道中流動的情況，受到諸如流體粘度、泵送速度等各種因素的影響。

3. 增譯 "由”

Much of people's physiology is timed by an internal pacemaker

人們的生理在很大程度上是由體內的整律器安排時間的。

* They're the ones that are caused by viruses and fungi.

這些是由病毒和真菌引起的肺炎。

* The rate of condensation is governed by the rate at which latent heat is carried away from the surface to cooler vapor.

冷凝速度由汽化潛熱從該表面轉入冷蒸氣的速度確定。

4. 增譯“用”

* If the workpiece is grabbed directly by hands, it warps due to the body temperature.

如果用手直接抓工件，工件就會因受到體溫而發(fā)生變形。

* Nowadays, solid walling is generally constructed of either bricks, precast concrete blocks or in situ concrete.

目前，實體墻通常采用磚、混凝土預制板砌筑或用鋼筋混凝土現(xiàn)場澆鑄而成的。

5. 增譯“靠"、“通過”、“以”

Rapid condensation is accomplished by means of a condenser.

迅速冷凝是靠冷凝器來完成的。