查询词典 primary and secondary

It was calculated that trophic level of macrofauna was between 2.0 and 3.7,and thus the macrobenthos of East Chongming tidal flat were primary and secondary consumers.

底栖动物的氮同位素能较好地反映其食性和营养位，计算出崇明东滩的大型底栖动物营养位在2.0～3.7，为一级消费者和二级消费者。

The obtained results show that the primary and secondary alcohols areconverted in good yields, whereas tertiary alcohol and phenol are unreactive.

当原料分别为乙醇、正丁醇、仲丁醇、苯甲醇和苯乙醇时，目标产物碳酸二乙酯、正丁基乙基碳酸酯、仲丁基乙基碳酸酯、苯甲基乙基碳酸酯和苯乙基乙基碳酸酯的产率分别为67.3、52.3、56.7、37.6和32.8％。

Objective To obtain very end full length cDNA of hepatitis C virus 5′untranslated region (5′UTR), and analyse its primary and secondary structure.

目的 获得真全长中国大陆 2a型丙型肝炎病毒 5′非编码区(5′UTR)cDNA ，并分析其一级结构和二级结构，为进一步研究其在HCV复制、翻译中的调控机制、开发新的抗HCV药物奠定基础。

These vortical structures can increase the interface between primary and secondary flows, thus resulting in rapid mixing and promoting pumping performance.

这些涡结构能够增加主、次流的接触边界面积，从而提高混合能力和引射能力。

This article mainly concerns the education of primary and secondary schools in England and Wells.

本文主要关注的是英格兰和威尔士的中小学教育。

A wide variety of wild animals, there are Qingyang, big sheep, bear, snow, white-lipped deer, lynx and other countries primary and secondary protection of animals.

野生动物品种繁多，有青羊、大头羊、狗熊、雪鸡、白唇鹿、猞猁等国家一、二级保护动物。

The results show that the normal process begins with archesporial cell and undergoes stages of primary and secondary sporogenous cell,microspore mother cell,dyad,tetrad,central nucleus microspore,vacuolated microspore,mature microspore,twocell pollen and threecell mature pollen.

对平流层辐射处理SP3谷子和对照CK3谷子雄性细胞发育的研究表明，雄性细胞正常发育过程从孢原细胞开始，经初生造孢细胞、次生造孢细胞、小孢子母细胞、二分体、四分体和单核小孢子中央期、单核小孢子液泡期、单核小孢子成熟期直到二细胞花粉、三细胞成熟花粉结束。

And on the basis of mono-factor test, using COD decreasing rate and decolour rate as targets, six factors affecting catalytic effect were selected to proceed L9(34) orthogonal experiments. The conclusion of primary and secondary factors was drawn and the turn was : kind of catalyst-amount of catalyst-pH value-temperature-amount of H2O2-amount of air . The optimization were determined to be : initial pH value : 5.5 ; temperatare : 90 C; amount of H2O2: lml/400ml waste water ; kind of catalyst: AC3 ; inciting small amount of air ; amount of catalyst: 125g activated carbon to 500g stone .

并在单因素试验的基础上，以废液COD去除率和脱色率为指标，选择废液初始pH值、反应温度、启动剂用量、催化剂类型、鼓空气量、催化剂加入量为因素，进行L_9(3~4)正交试验，确定影响因素因素的主次关系为：催化剂类型→催化剂加入量→废液初始pH值→反应温度→启动剂量→鼓空气量；最佳处理技术条件为：废液初始pH5.5；反应温度90℃；启动剂量1ml／400ml废液；AC3型催化剂；鼓小流量空气；炭石比125g／500g。

Objective To study the effect of ozone therapy for lumbar vertebrae discitis.Methods Ozone injection through intervertebral disc and foramen was used to cure 8 cases of primary and secondary discitis.

目的 采用微创臭氧治疗腰椎间盘炎方法对8例原发性和继发性椎间盘炎患者采用经皮穿刺椎间盘内及椎间孔臭氧注射治疗椎间盘炎。

Specific gene expression of the pro-inflammatory cytokine IL-1β and the type II IL-1βreceptor (IL-1RII, 'decoy receptor') was studied in skin of rainbow trout Oncorhynchus mykiss (Walbaum, 1792) fry during infection with the ectoparasitic monogenean Gyrodactylus derjaini Mikailo, 1975. Cytokine expression was studied in both primary and secondary infections using a semi-quantitatie RT–PCR technique.

用半定量RT-PCR的方法，研究初次感染和二次感染体外寄生的单殖吸虫---三代虫后，虹鳟鱼苗的皮肤中促炎症细胞因子IL-1β及IL-1βII型受体（IL-1RII）的特异性基因表达。

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。