| 单词 | helicopters | 
| 释义 | helicopters听听怎么读 
                            英 ['hel?k?pt?z]
                         
                            美 ['hel?k?pt?z]
                         是什么意思 直升机( helicopter的名词复数 ); 英英释义helicopter[ [?helik?pt?z] ]
 学习怎么用 双语例句用作名词(n.) 
 权威例句Principles of helicopter aerodynamicsQuadrotor Helicopter Flight Dynamics and Control: Theory and ExperimentAn interactive approach for hierarchical analysis of helicopter logistics in disaster relief operationsPrinciples of Helicopter AerodynamicsControl of a quadrotor helicopter using visual feedbackOutput tracking control design of a helicopter model based on approximate linearizationAn Application of Reinforcement Learning to Aerobatic Helicopter FlightAdaptive trajectory based control for autonomous helicoptersAutonomous Inverted Helicopter Flight via Reinforcement LearningOutput Tracking Control Design of a Helicopter Model | 
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