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绳索 有关物理和机械性能的测定
Ropes--Determination of certain physical and mechanical properties
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南海区拖网网囊最小网目尺寸
The minimum mesh size of the traw1 cod-end in South China Sea
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东海、黄海区拖网网囊 最小网目尺寸
The minimum mesh size of the trawl cod-end in the East China Sea and Yellow Sea
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渔用机织网片
Machine weaving netting for fisheries
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合成纤维渔网片试验方法 网片尺寸
Testing method for fishing nets of synthetic fibre-Size of netting
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