transport number

基本解释

The oxygen ion transport number of the samples increases with increasing temperature.
随着温度的升高，样品的离子迁移数增加。
She was given a transport number, a label pinnedon her lapel that corresponded with the details on the ship's passenger list.
她得到了一个护照号码，一个贴在她衣服领子上的标签，上面写着旅客信息——和船上的旅客名单一致。
Both the samples are all a mixed conductor of oxide-ion and electron hole with an almost same oxide-ionic transport number under oxygen atmosphere.
这两个样品在氧气氛中均是氧离子与电子空穴的混合导体，具有几乎相同的氧离子迁移数。

Migrants face a number of hazards along the way, including wild animals, unsafe transport and criminal gangs.

In this case, yes, they're using this amphibious assault vehicle merely to transport a large number of troops from one post to another.
NPR: Looking at Armored Troop Transports in Iraq