They found that up to 421,000 units of bacteria can collect on the outside of a single shoe.

他们发现，一只鞋的鞋面就可以聚集多达42.1万个细菌单位。

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The branch of economics that deals with single units of production and consumption.

经济学的分支，研究生产和消费的单个单位。

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Doubles have twice the dynamic load rating of single units and can be mounted in place of the singles in most applications due to similar mounting footprint.

双打有两倍的动态负载率和单一的单位，可以安装到位的单打在大多数应用中由于越来越多类似的足迹。

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Some hotels that originally instated single-sex units have since done away with them.

CNN: STORY HIGHLIGHTS

The workshop kits generally contain single session units of 1-4 hours and comprehensive sets of units on a single topic covering technical, organizational and ethical topics.

UNESCO: Communication and Information

The photovoltaic system consists of three single-axis tracking units mounted to the ground.

FORBES: Borrego Solar Systems Completes Its Largest PV Installation At A Federal Site