1. Explanation: The small constellation Sagitta sports this large piece of cosmic jewelry, dubbed the Necklace Nebula.

2. The feeding selectivity of Sagitta crassa, some ecological factors effect to the feeding rate and their diurnal feeding rhythm were experimentally studied in this paper.

3. Sagitta crassa are cannibalistic although the occurrence frequency of cannibalism is not high.

4. The demand, sagitta, spring are long, the radius, the arc are long , the angle, calculates formula.

5. Optimum film management on the Sagitta guarantees greater independence in label features and means that maintenance time is reduced for assembly cleaning.

6. The results showed this area was single desert Haloxylon mmodendron community dominated Meriones meridianus - Rhomlomys opimus - Dipus sagitta.

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7. Copepoda is the most important food group in the food composition of Sagitta crassa in four seasons, but there are remarkable changes in percentage of copepoda species consumed by Sagitta crassa.

8. The diamond wheel for grinding magnet shoe with low sagitta composite electroplating in Ni - Co alloy electrolyte.

9. The tolerance to quickly-changed temperature and salinity, and gradually-changed temperature and salinity in Sagitta crassa were studied.

10. Branching intensity and rhizome length of L . virgaurea and L. sagitta increased with the increasing of resource level.

11. The compact size of the machine along with its integrated electric control box allows for quick and easy installation and integration of the Sagitta into the bottling line.

12. This character might improve invasion ability of ramet in vacant habitat, and adapted to the character of life history that L. virgaurea and L. sagitta presented under transplantation condition.