| 单词 | plankton net |
| 释义 | > as lemmasplankton net plankton net n. a very fine net used to collect samples of plankton or other very small organisms. ΘΚΠ the world > life > biology > collection or conservation of natural specimens > [noun] > equipment for collecting or preserving > of marine life keer-drag1836 plankton net1902 plankton indicator1925 plankton recorder1926 1902 Geogr. Jrnl. 19 379 The plankton was drawn by a pump through a filter of hardened paper placed horizontally between two small glass filters, by which means Mr. Steenstrup obtains, he believes, the exact contents of the water more thoroughly than with a plankton-net. 1952 J. Clegg Freshwater Life Brit. Isles xviii. 293 Some form of pond-net is almost essential. Probably the type of most general utility is that known as a plankton-net... The bag part is made of fine-mesh material, and carries at its base a tube or bottle into which the organisms descend. 1990 Sci. Amer. Mar. 69/2 The continuous ram feeders..have been described as tow-net filter feeders because their method of feeding appears similar to the workings of the plankton nets towed by oceanographers. < as lemmas |
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