Acoustics - recommended practice for the design of low - noise workplaces containing machinery - noise control strategies 聲學(xué).低噪聲機(jī)器工作間設(shè)計(jì)的推薦實(shí)施規(guī)程.第1部分:噪聲控制戰(zhàn)略
Semiconductor discrete devices . detail specification for type 3dg144 npn silicon high - frequency low - noise low - power transistor 半導(dǎo)體分立器件. 3dg144型npn硅高頻低噪聲小功率晶體管詳細(xì)規(guī)范
Semiconductor discrete devices . detail specification for type 3dg143 npn silicon high - frequency low - noise low - power transistor 半導(dǎo)體分立器件. 3dg143型npn硅高頻低噪聲小功率晶體管詳細(xì)規(guī)范
Semiconductor discrete devices . detail specification for type 3dg142 npn silicon high - frequency low - noise low - power transistor 半導(dǎo)體分立器件. 3dg142型npn硅高頻低噪聲小功率晶體管詳細(xì)規(guī)范
The new policy has two strands : to retrofit barriers on existing roads and to re - surface local roads with low - noise material 新政策共有兩項(xiàng)措施:在現(xiàn)有道路安裝隔音屏障及重鋪低噪音路面。
Acoustics - recommended practice for the design of low - noise machinery and equipment - introduction to the physics of low - noise design 聲學(xué).低噪聲機(jī)械和設(shè)備的設(shè)計(jì)推薦規(guī)程.低噪聲設(shè)計(jì)的物理學(xué)說明
Acoustics . recommended practice for the design of low - noise workplaces containing machinery . part 2 : noise control measures 聲學(xué).有機(jī)械裝置及設(shè)備的工作地點(diǎn)低噪音設(shè)計(jì)推薦慣例.第2部分:噪音控制度量
Acoustics . recommended practice for the design of low - noise workplaces containing machinery . part 1 : noise control strategies 聲學(xué).有機(jī)械裝置及設(shè)備的工作地點(diǎn)低噪音設(shè)計(jì)實(shí)用推薦法.第1部分:噪音控制方法
Semiconductor discrte device . detail specification for silicon npn ultra - high frequency low - noise difference match transistor of type 3dg210 半導(dǎo)體分立器件. 3dg210型npn硅超高頻低噪聲差分對晶體管.詳細(xì)規(guī)范
Aluminum choke rings and a dorne margolin dipole antenna element , low - noise amplifier exhibit superior low - noise performance , obtaining 流圈和一個dorne margolin偶極元件,低噪音放大器lna體現(xiàn)了出色的低噪音功