To solve this problem, we have studied the operation of Heller system by experimental test and theoretical analysis.

本文针对该问题，将理论分析与试验研究相结合，研究海勒式空冷系统的运行规律。

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Senator Cruz now wishes to rely on the ruling in Heller which adopts the test set forth in the United States v.

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Heller became the plaintiff in the test case, and in 2008 the Supreme Court ruled in his favor, holding that the Second Amendment does confer on individuals the right to bear arms.

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Seeing a chance to test himself against the experts, Heller agreed to let Morgan Stanley manage half his portfolio while he handled the rest.

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