Discribe the operation of a rooftop package unit air conditioner.

说明屋顶空调机的操作方法。

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Tests was carried out on cookies both in single and package unit to measure its velocity change and acceleration in different orientation in different damage rate based on damage boundary theory.

以苏打饼干单片和单包为研究对象，应用破损边界理论，设计相关实验，测试饼干在不同破损率条件下各个方位的速度变化及加速度，构造出饼干的破损边界曲线。

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Upon completing the code and the unit tests, the developer creates a review package consisting of design specifications, code, unit test specifications, and unit test results.

在完成了代码和单元测试之上，开发人员创建一个由设计说明、代码、单元测试说明和单元测试结果组成的评审包。

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Tadeusz Najbauer, deputy head of Solidarity's telecoms unit, says the unions need the package as a bargaining tool to fight restructuring plans.

ECONOMIST: Polish trade unions

According to Prof Tilli Tansey, a medical historian at Queen Mary University of London, who has studied the unit, it became an oddly popular form of package holiday during the post-war years.

BBC: Magazine

In the weeks before the invasion of Iraq the U.S. Agency for International Development told Bechtel National, a unit that handles government work, to expect a sensitive package of information about postwar reconstruction.

FORBES: Contacts For Contracts