control heading meaning in Chinese

控制头栏

Under radar control heading 265 descend to 6000 feet
雷达管制航向265下降到6000英尺。
Control head select
控制磁头选择
In order to relatively hold up mud and sand on the spot and control deposition , we should control head channels , branch channels , main channels on slope surface comprehensively
通过采用沟头、支毛沟、干沟及坡面的综合治理，实现相对就地拦截泥沙，从而达到控制库坝淤积的目的。
The results oft - test indicated that few genetic main effects of qtls found were significant , among which additive by additive epistatic effects and additive effects were most significant for qtls controlling heading date , additive effects were most significant for qtls controlling kilo - grain weight
T测验的结果表明，鉴别出的qtl中，遗传主效应达到显著的不多，其中抽穗期的qtl以加加上位性效应和加性效应最为显著，千粒重以加性效应最为显著。