pinger

基本解釋

Then the pinger pings localhost on port 80, dying if a bad status code is returned.
然后發(fā)射器（pinger）ping 本地主機的 80 端口，如果返回無效狀態(tài)碼，則停止。
Underwater GPS positioning system includes four parts which are GPS differential reference station, GPS buoy subsystem, underwater pinger, ship-based data processing and control center.
差分GPS水下立體定位系統(tǒng)包括GPS差分基準站、GPS浮標、水下收發(fā)機、船基控制中心四部分。
She ordered Pinger to fetch the keys to the upstairs rooms and find trustworthy people to deliver the screen.
“因命平兒拿了樓房的鑰匙，傳幾個妥當人抬去。” 收藏。

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a device that makes a pinging sound, esp one that can be preset to ring at a particular time