The engine gave short calls with its whistle, and frequently the bell rang.
机车的汽笛发出短促的呜呜声，车铃也不时地响着。
Number 7. BELL AH-1 COBRA is a two-blade, single engine attack helicopter manufactured by Bell Helicopter.
第七名：贝尔的AH-1眼镜蛇是由贝尔直升机公司制造的双叶片，单发动机攻击直升机。
Number 8. BELL UH-1 IROQUOIS (HUEY) is a military helicopter powered by a single turboshaft engine, with a two-bladed main rotor and tail rotor.
第八名：贝尔uh - 1IROQUOIS(惠)是一种军用直升机搭载单涡轮轴发动机，具有双桨叶主旋翼和尾桨。
The three dimensional flow field for the bell type swirl chamber diesel engine is first calculated. The calculated results and LDV measured data are compared, which show fairly good agreement.
首次对吊钟型涡流室式柴油机的流场进行了3维计算，计算结果与LDV实验结果具有良好的一致性。
The three dimensional flow field for the bell type swirl chamber diesel engine is first calculated. The calculated results and LDV measured data are compared, which show fairly good agreement.
首次对吊钟型涡流室式柴油机的流场进行了3维计算，计算结果与LDV实验结果具有良好的一致性。
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