“ping”的概念、定义、翻译、参考文献-科学参考

单词	ping
释义	ping [piŋ] ^ELECTRONICS A sonic or ultrasonic pulse sent out by an echo-ranging sonar.
随便看	QPSK qr QRS complex qr tr Q signal QSO QSS Q-switched laser qt quad quadded cable quadded redundancy quad density quad in-line quadrangle quadrant quadrantal angle quadrantal correctors quadrantal deviation quadrantal error quadrantal point quadrantal spheres quadrantal spherical triangle quadrant angle of fall quadrant electrometer

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。