The results indicate that the directivity of the new eletric horn has been improved and the environment and safty requirements can be satisfied. 結果表明，在安全示警的條件下，新型非制式電笛的指向性得到有效改善，能夠滿(mǎn)足環(huán)保和安全示警的雙重要求。
To improve the directivity of locomotive electric horns, a new nonstandard electric horn has been trial-produced and tested on the static and dynamic conditions. 在此基礎上優(yōu)化試制了新型非制式電笛，并在靜態(tài)和動(dòng)態(tài)條件下，對其指向性進(jìn)行了實(shí)驗測試與分析。
