1) reformation of upland wide strip multiple harvest planting
![点击朗读](/dictall/images/read.gif)
旱地宽带改制
2) Arid area
![点击朗读](/dictall/images/read.gif)
干旱地带
1.
Experiments with the Site-preparation Afforestation of Pinus radiata D.Don in Arid areas;
![点击朗读](/dictall/images/read.gif)
干旱地带辐射松整地造林研究
2.
Tests in Green Manuring under Young Forest of Platycladus orientalis in Arid Areas;
![点击朗读](/dictall/images/read.gif)
干旱地带侧柏幼林地绿肥种植研究
3.
A Trial Report on the Application of DBOL to Afforestation of Prunus armeniaca in Arid Areas;
干旱地带应用DBOL保水剂营造山杏的试验研究
3) bandwidth enhancement
![点击朗读](/dictall/images/read.gif)
带宽改进
1.
Several techniques of bandwidth enhancement are adopted in this paper for different shapes of single-layer single-patch antenna.
采用多种带宽改进技术,应用于不同形状的单层片状天线,主要包括:短路销钉,双宽缝(E形)等。
4) windeband improvement
![点击朗读](/dictall/images/read.gif)
宽带改善
6) tobacco field transformed from paddy field
![点击朗读](/dictall/images/read.gif)
水田改旱地
补充资料:宽带和窄带业务
宽带业务是相对窄带业务而言的,一般来说,对于速率低于2Mb/s的通信业务统称窄带业务,如电话网、N-ISDN所提供的业务。对于高于2Mb/s的通信业务,如帧中继业务、视频点播、ATM业务、TV会议等称为宽带通信业务。 目前投入应用的宽带接入技术主要有两种:ADSL和FTTX+LAN。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条