Suitable for those permanently installed gratings or those which are not to be removed frequently .
此方法适用於格栅板不常被拆除或永久安装时。
Divers and remotely operated vehicles are being used to remove panels and gratings at the gannet platform to assess the ability to close the leaking valve .
潜水员和遥控操作潜水艇被用于移除gannet平台的栅板,以评估关闭发生泄漏的安全阀的能力。
The results demonstrated that the banana-shaped liquid crystal molecules were able to assemble themselves into organic groove-free gratings which could be diversiform defined structures with a periodic modulation of the birefringence index .
结果表明:这些香蕉形分子能够通过分子自组装技术而形成各种各样的、双折射率周期性变化的规整结构。
The need for larger and better gratings became apparent .
对更大、更好的光栅的需求变得突出起来。
Steel gratings and blinds , cctv cameras , security guards at the entry and hidden inside only add to the atmosphere of a battlefield and on-going hostilities .