沙蚕

At present it is one of the largest argrochemical enterprises in china.The research-based company which has more than ten technical products in three fields: insecticide, herbicide, fungicide, continuously develops new products. All this made it turn into the largest supplier of Nereid insecticide.

华星化工凭借雄厚的技术不断开发新产品，在农药杀虫剂、除草剂、杀菌剂三大领域取得了丰硕的成果，拥有十几个原药和三十多个制剂品种，并成为中国最大的沙蚕毒类杀虫剂供应商。

Very rich in aquatic resources, is the clams, seaweed,河鳗, Nereis, shrimp export base.

水产资源十分丰富，是全国文蛤、紫菜、河鳗、沙蚕、对虾的出口创汇基地。

To detect the partial molecular characteristics of a novel fibrinolytic protease from the coelomic fluid of Nereis virens identified and purified to homogeneity.

目的：从沙蚕Nereis virens的体腔液中纯化、鉴定出一种新的纤溶酶，并对其进行分子表征。

Nereis is a high-protein,low-fat and high-quality Penaeus vannamei feed through nutrition assessment.

通过营养评价，表明沙蚕对南美白对虾来说是一种高蛋白、低脂肪的优质饲料。

Winter animal food fish, Nereis, 1.40 clams, snails and crabs.

冬季动物性食物有鱼类、沙蚕、四角蛤蜊、钉螺及其蟹。

Using the Shannon-Wiener's niche breadth index and the Pianka's niche overlaps index, we found that the Nereis japonica, nemerteans and eelworms had broad niche breadths (above 2.80); the niche overlaps among them was high (above 0.90) in the quantitative analysis on the 21 species present in the quantitative sample analysis.

对定量取样中获得的21个物种以Shannon-Wiener指数为基础进行了生态位宽度测定，以Pianka重叠指数为基础进行了生态位重叠值分析，结果表明日本沙蚕、纽虫和线虫的生态位较宽，均为2.80以上，它们之间的生态重叠值也较高，均为0.90以上。

The results indicate that both petroleum hydrocarbons and Cu~(2+) have high toxicity to the polychaete.

结果表明：石油烃和Cu2+对沙蚕均表现出较强的毒性，暴露3d后，其LD50值分别为117.5μL.L-1和864.0μg.L-1。

The results indicated that petroleum hydrocarbons,Cu~(2+) and Cd~(2+) had the high toxicity to the polychaete Perinereis aibuhitensis Grube.

结果表明，石油烃和Cd2+、Cu2+对沙蚕均具有较强的毒性效应。

Using the indoor simulating method of pollution exposure at various concentrations,the toxic effects of various concentrations of petroleum hydrocarbons, copperCu~(2+ and cadmiumCd~(2+ on the polychaete Perinereis aibuhitensis Grube and on its acetycholinesterase activity were examined.

采用浓度梯度污染暴露室内模拟方法，研究了沙蚕暴露于不同浓度的石油烃和重金属Cu2+、Cd2+的毒性效应及乙酰胆碱酯酶活性的响应。

The grazing rate of the juvenile polychaete, Neanthes japonicaon microphytobenthos was studied in situ by 14C technique, on the intertidal mudflat in the north of Dingzi Bay (36.6°N, 120.8°E), in May, 1996. The result shows that the individual grazing rate of N.

采用同位素14C现场同步示踪技术，测定了丁字湾北部泥质潮间带不同体长日本刺沙蚕幼年个体对底栖微藻的摄食率。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。