So these two together, l times rho, give us mass per unit area.

这两个量，l乘以ρ,一起给出单位面积上的质量。

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L-3 Services, which is based in Chantilly, is a unit of L-3 Communications Inc., located in New York.

位于Chantilly的l - 3服务公司是位于纽约的l - 3通信公司的一个分部。

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Teller:Name, quality, unit price and amount of goods, ports of loading and destination, price and payment terms, shipping documents, latest shipment date and validity of the L/C.

商品的品名，数量，单价和种类，装货港和目的地，价格和付款条件，装船单据，最后装运期和到目的地的有效期。

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Liu Sixing, who was also known as Steve Liu, worked in L-3 Communications' space and navigation unit in New Jersey from 2009-2010 as a senior engineer.

BBC: US jails Chinese engineer for exporting trade secrets