db

db的英语例句

1. A DB - 624 quartz capillary column and a FID were used.

   采用气相色谱法, DB -624石英毛细管柱,氢火焰离子化检测器(FID),程序升温,检测器温度为300℃.

2. DB can be replaced while the furnace is at operating temperature.

   当熔炉内温度在操作范围内时DB型 硅碳棒可以被替换.

3. B & W products have achieved CE 、 UL 、 DB 、 ROSH and other international approvals.

   我公司的产品已取得CE、UL、DB、ROSH等国际认证.