您要查找的是不是：
- dial guard ring 日历保护环
- One should always have a Guard Ring arround the differential pair. 在差分对周围作保护环。
- In applications where high impedances and very low currents are involved a guard ring may be used to minimize the effects of low insulation resistance. 保护环用在那些高阻抗或电流非常微弱的电路中，用于减轻因绝缘电阻不够高而产生的（漏电）问题。
- Maintenance to guard ring plate of rotary kiln 回转窑窑口护板的维修
- guard ring isolated monolithic integrated circuit 保护环隔离单片集成电路
- guard ring isolated monolithic IC 护环隔离单片集成电路
- The dog kept a vigilant guard over the house. 这只狗警惕地守护着这所房屋。
- That's all there is to make a speed dial call. 在那里全部要进行快速拨号呼叫。
- I must have dial the wrong number. 我一定是拨错电话号码了。
- Be there a direct- dial phone in the room? 这房间里有直拨电话吗？
- He urged them to guard against conceit. 他要求他们防止骄傲自满。
- I dial the right number, but nobody answer. 电话号码我倒拨对了，可没人接。
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- He bribed his way past the guard and escaped. 他买通看守而逃之夭夭了。
- I was off my guard and made no suitable reply. 我没提防，因此没有作出适当的回答。
- The diamond ring dazzled with brilliancy. 这只钻石戒指闪耀夺目。
- The clock dial is illuminated at night. 那只钟面是夜光的。
- The guard of honor headed up the whole parade. 仪仗队走在游行队伍的最前头。
- Can you read the number on the dial? 你能读出刻度盘上的读数吗？
- Please guard against pickpockets on the bus. 在公共汽车上要谨防扒手。
