您要查找的是不是：
- A measurement of the difference in cycles/sec between the limiting frequencies of a band in which the attenuation of any frequency, with respect to the central frequency, isless than a specified value(usually half power or three db). 一個(gè)頻帶的上下界頻率之間差的一種度量，以周期/秒表示。在該頻帶中，任何一頻率的衰減（對中心頻率而言）小于一個(gè)特定的值（通常為半功率或3分貝）。
- Design of A New Wideband Microstrip 3 dB Hybrid Ring 寬帶微帶線(xiàn)3dB混合環(huán)設計
- He trudge three hour in the snow to get back home. 他在雪中跋涉三個(gè)鐘點(diǎn)才回到家。
- Our family reunions are always three ring circus. 我家合家團聚的場(chǎng)面總是熱鬧非凡。
- The train arrived on the dot of three o'clock. 那輛火車(chē)三點(diǎn)鐘準時(shí)到達。
- Her family lives three li away from her school. 她家住在離學(xué)校有三里路的地方。
- We spied three figures in the distance. 我們望見(jiàn)遠處有三個(gè)人影兒。
- The earthwork was cast up in three hours. 土方工程在三小時(shí)內就完成了。
- It's three blocks straight ahead. 一直往前走過(guò)三個(gè)街區就是。
- The investigator will be divided into three groups. 所有的調查員將被分為三個(gè)小組。
- Three people can sit in the back of this car. 這車(chē)的后座可坐3個(gè)人。
- I did the calculation by the rule of three. 我是根據比例運算法則計算出來(lái)的。
- He is on night duty three days a week. 他一個(gè)星期要上三天夜班。
- He knocked back three pints of beer in ten minutes. 他在10分鐘里喝了3品脫啤酒。
- It's three years to the day since we met. 我們整整三年沒(méi)見(jiàn)面了。
- I will make you learn driving in three days. 我將使你在三天之內學(xué)會(huì )開(kāi)車(chē)。
- The car is three years old and still unpaid for. 這汽車(chē)用了三年還沒(méi)付購車(chē)款呢。
- The cipher took me three weeks before I hit it. 我費了3個(gè)多星期才把這密碼解釋出來(lái)。
- Her time is fully occupied with her three children. 她的時(shí)間全部用在她的三個(gè)孩子身上了。
- Our party has been out of office for three years. 我們的政黨在野已經(jīng)三年了。
