"one who tests, puts to trial, or assays," 1660s, agent noun from test (v.). Earlier "a crucible" for trying metals by heating them (mid-15c.).
tester (n.2)
"canopy over a four-post bed," mid-14c., from Medieval Latin testerium, from testera "head-stall" of the bridle of a horse, extended use and form of Late Latin testa "skull," in Vulgar Latin "head" (see tete). From Medieval Latin testa as "head" also come tester in obsolete senses of "piece of armor for the head" (late 14c., via Old French testiere) and "coin of Henry VIII" (1546), the first English coin to bear a true portrait.
雙語例句
1. I have a battery tester in my garage.
我的車庫里有臺電池測試儀。
來自柯林斯例句
2. It's a bulb pressure tester for detecting battery leaks.
這是檢測電瓶漏氣用的膠球壓力試驗器.
來自辭典例句
3. A dead - weight tester is shown in Fig. 8.
靜重試驗器如圖8所示.
來自辭典例句
4. Place the tester adapter over the opening.
把試驗器連接裝置放在加油口上.
來自辭典例句
5. This tester is provided with a " Guard " terminal to prevent errors due to surface leakage.