然而近代电子学对调谐的频率范围很宽的带通放大器提出很多要求.There is a great deal of demand in modern electronics, however, for bandpass amplifiers.频率是可以调谐的.It is accompanied by a tone.外腔反馈的激光二极管阵列 ( LDA ) 可获得窄线宽 、 可调谐的光谱输出.Linewidth - narrowed, tuna...
Authorities requisitioned hotel rooms to lodge more than 3,000 stranded Christmas vacationers.当局征用旅馆房间安顿了3,000多名无处落脚的圣诞度假者。Rescue services have been working round the clock to free stranded motorists.救援部门一直在日夜不停地工作，解救被困司...
The company wants to break away from its downmarket image.这个公司想摆脱它面向低消费阶层的形象。Stallone wants to break away from his action-hero image.史泰龙想要摆脱动作明星的形象One could break away into irony -- as indeed he often had to.自我解嘲一下就完了 --...