可伸缩扩展副平台，具有更大作业空间，配合可折叠围栏，运输移位更方便。
Scalable assistant expansion platform has bigger operation space and foldable rail makes transportation displacement more convenient.
实践证明，拖网分离栅能够有效地提高拖网作业的选择性，降低副渔获物和抛弃，保护渔业资源，因此，许多国家通过立法使其被强制使用。
Trawl sorting grids can effectively enhance the selectivity of trawl, reduce by-catch and discards, protect fish resources, which are compulsively used in many countries by legislation.
钻机配有一个主卷扬机、一个副卷扬机。主卷扬机用于升降钻具、下井管等。副卷扬机用于更换钻杆或其他取芯工具及提砂筒，也可用于洗井作业。
Vice hoist for the replacement of the drill pipe or other tools and put sand core tube can also be used for flushing operations.
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