In practice of course there will be a dynamic lag in the antenna following the sight line.
当然，实际上在天线跟踪视线的过程中是会有动态滞后的。
On-line analysis instruments have several disadvantages including costly price, great lag etc., which lead to descend of control system's performance and can't meet production requirements.
由于在线分析仪表不仅价格昂贵，而且分析仪表滞后大，最终将导致控制系统的性能下降，从而难以满足生产要求。
The results indicate that: (1) the character of saturation line change has a time lag of the water level of tailings impoundment;
试验结果发现：尾矿堆积坝的浸润线变化存在滞后性；
In addition to these, some large-lag links and complicated on-line analyzer etc can also result in time-delay.
另外有些大惯性环节、复杂的在线分析仪等等也会导致时延现象。
This paper briefly looks back on the breeding history of three line hybrid rice and reviewed its breeding experience. The reason that hybrid wheat studies lag behind hybrid rice is analyzed.
简要回顾了我国三系杂交水稻的育种历程，重温了其育种经验，分析了杂交小麦研究落后于杂交水稻的原因。
This paper briefly looks back on the breeding history of three line hybrid rice and reviewed its breeding experience. The reason that hybrid wheat studies lag behind hybrid rice is analyzed.
简要回顾了我国三系杂交水稻的育种历程，重温了其育种经验，分析了杂交小麦研究落后于杂交水稻的原因。
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