卡特彼勒公司是世界上最大的工程机械生产厂家之一。卡特彼勒作为行业领袖，始终致力于全球的基础设施建设，并与其代理商携手并进，在各大洲推进积极、持久的改革。
卡特彼勒公司的一位发言人拒绝就公司在华市场份额问题置评，但他说，卡特彼勒在中国销售很多种建筑和采矿设备，不止包括挖掘机。
A Caterpillar spokesman said the company doesn't comment on market shares but said it sells a wide variety of construction and mining equipment in China, not just excavators.
卡特彼勒公司和约翰·迪尔公司(挖掘机、推土机，和农用器械制造商)的销售额也连连攀升。
Caterpillar and John Deere, which makes diggers, bulldozers and farm equipment, saw sales leap.
本文主要设计了卡特彼勒公司定制的挖掘机空调的风速流量采集系统，提出了一种基于单摆法的流量测量方法，该方法的原理是基于流体阻力式的。
This paper mainly designs a kind of velocity collection system of the excavators which is ordered by Caterpillar Company. A new method in measuring the velocity is advanced, based on the pendulum.
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