Dense smoke coming out of No. 4 engine cowling (engine nacelle), fire suspected.

第四号发动机整流罩冒浓烟，可能着火。

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The reverser sleeve is part of the engine cowling . the actuating system is on the reverser.

反推器的外壳是发动机整流罩的要部分。 作动系统在反推器上。

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In the Thielert approach, he says, the radiator is under the engine cowling, which leads to low cooling efficiency and more drag, because of too small a radiator and poor ducting.

他说，在Thielert发动机设计方案中，散热器位于发动机整流罩下方，这导致散热效率低下，阻力增加，因为它的散热器太小了，而通风量有不足。

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