查询词典 larva

Benthos ; larva of Chironomidae ; waterworm ; utilization

底栖动物；摇蚊科幼虫；水蚯蚓；利用率

This paper studied the toxicity effect of Ni、 Hg and PCP on Chironomus Larva.

本文研究了镍、汞和五氯酚对摇蚊幼虫的毒性作用。

The Chironomus Larva Pollution has become a problem in municipal water system.

城市供水系统中摇蚊幼虫污染已经成为不可忽视的问题。

In all the problems in water supply, the remove of Chironomus larva from drinking water has become one of the most important, and it is very difficult to effectively remove by conventional methods.

摇蚊幼虫难以被常规的水处理工艺有效地去除，成为又一困扰水厂正常生产运行的水处理问题。

Also the research status、advantage and limitation of different methods in the remove of Chironomus larva were analyzed systematically and some scientific tendencies were prospected.

大多数种类幼虫生活在淡水中，但也有在盐份很高的水体中生活的，如盐生摇蚊T.gr.salinarius，它不但在氯离子浓度较高的青海湖中生存，也能在碱性苏打型的水体中生存[2]。7Lj建筑人

The toxicity and bioconcentration of Ni~(2+),Hg~(2+) and PCP to Chironomus plumosus larva are studied.

研究了Ni2+、Hg2+和五氯酚对羽摇蚊幼虫的毒性和生物浓缩。

The 7d-BCF of Chironomus plumosus Larva to Hg of 10μg/L is 430, to Ni of 10mg/L is 176 and to PCP of 0.02mg/L is 30, respectively.

镍、汞和五氯酚都会对羽摇蚊幼虫的口器产生致畸作用。

Disinfectants such as chloramines, chlorine dioxide, sodium hypochlorite and hydrogen peroxide were used respectively for annihilate Chironomus larva in drinking water treatment.

为筛选出有效、安全、经济的杀灭红虫药剂，以保证居民饮用水安全，研究了氯胺、二氧化氯、次氯酸钠和过氧化氢，在20℃、无光照条件下对该种红虫单一和联合的杀灭效果。

The results of experiment are summarized as follows: The 24h-LC_(50) of Ni、 Hg and PCP to Chironomus plumosus Larva are 5.7g/L, 3.54μg/L、0.11mg/L, respectively ; The 48h-LC_(50) are 1.4g/L、2.64μg/L、 0.09mg/L, respectively.

实验结果简述如下： Ni、Hg和五氯酚对羽摇蚊幼虫24h-LC_(50)和48h-LC_(50)分别为5.7g／L、1.4g／L；3.54mg／L、2.64mg／L和0.11mg／L、0.09mg／L。

Spawn, larva, chrysalides and imago can grow up naturally, so the natural growth of neocheting eichhorniae would not be affected by high altitude in Kunming.

象甲在昆明地区一年发生2~3代，卵，幼虫，蛹和成虫均可正常生长发育，高海拔并不影响象甲的自然生长。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。