on the working principle, structure characteristic, fators and parameters that influence function of several seed drill units, such as flnted wheel feed, studded roller feed, centrifugal feed, penumatic feed and so on.
对条播机的外槽轮、钉轮、离心式、气力式等几种条播排种器的工作原理、结构特点及影响性能的因素和参数进行了分析比较研究。
dual-purpose dril
(平播与沟播)两用条播机
closed delivery drill
窄行条播机，闭式输种条播机
plain-and-fertilizer drill
通用谷物肥料条播机
drill unit with fertilizer attachment
带施肥装置的条播机
twin-disk drill
双圆盘开沟器的条播机
hoe-colter drill
带锄式开沟器的条播机
grain-and-grass drill
谷物牧草(草籽)条播机
grain and small seed drill
谷物与小牧草籽条播机
Test methods of grain drills
GB/T9478-1988谷物条播机试验方法
The radio broadcast the news briefly.
收音机简要播报了这条消息。
A Method of Machine Vision to Detect the Performance of Metering Mechanism for Drill;
条播排种器性能检测的机器视觉方法
There is interest in solid drilling or broadcasting soybeans either by field equipment or by airplane.
对大豆使用农田机械条播或用飞机撒播是有兴趣的事。
Safe technical requirements for agricultural machinery operating-Seeder
GB16151.9-1996农业机械运行安全技术条件播种机
Methods of measurement under conditions different from broadcast signal standards on receivers for television broadcast transmissions
GB/T12857-1991电视广播接收机在非标准广播信号条件下的测量方法
Effects of broadcast sowing and precision drilling of super rice seed on seedling quality and effectiveness of mechanized transplanting
超级稻精量条播与撒播育秧对秧苗素质及机插效果的影响
scattering board
(撒播机的)撒播板
General specification for non-broadcast video tape recorders
GB/T15643-1995非广播磁带录像机通用技术条件
The radio blared out the exciting news.
收音机大声广播了这条令人振奋的消息。