查询词典 constituents

In view of the problems concerning the engineering geology of laterite in Liupanshui City,Guizhou Province,researches on lateritic constituents,physical properties,swelling property,shrinkage,etc.

针对贵州六盘水地区红粘土地基大量工程实践中出现的不良工程地质问题，对该区红粘土的化学成分、物理力学性质、胀缩性、沉降量等进行了研究，发现该区红粘土与国内其它地区相比，具有强度低、均匀性差、裂隙性强、土洞与塌陷发育等特征，因此该区红粘土地基的处理应根据这些特征采取一些针对性的措施。

The silicon-acrylic latices with core-shell structures were prepared by means of a"two-stage"emulsion copolymerization. The effect of constituents and proportion of core and shell parts on the properties of latex film were investigated, and their applications in water-borne wood coatings and elastic coatings were explored. The results indicate that wood coating and elastic silicon-acrylic coatings with good performance and zero VOC content can be prepared by suitable design of structure of silicon-acrylic latex particles.

通过&两段&乳液聚合的方法合成了具有芯／壳结构的硅丙乳液，研究了芯／壳乳液粒子结构及组成比例对聚合物漆膜性能的影响，并探讨了芯／壳乳液在水性木器涂料及弹性涂料中的应用，结果表明，通过对硅丙乳液粒子的结构设计，可以获得性能优良的零VOC含量的木器涂料和弹性硅丙涂料。

So the study on chemical constituents towards Laurencia can enrich the knowledge of this genus and provide a new way for seeking the lead compounds of new medicine.

因此研究凹顶藻Laurencia的化学成分，可以丰富人们对该种属的认识，同时对寻找新的药物先导化合物提供重要的依据。

In this dissertation, the chemical constituents of the red algae Laurencia cartilaginea and Laurencia majuscula collected from the South China Sea of the Xisha Islands were studied, and 12 compounds were isolated by combination of extraction and separation and identified by various kinds of spectrum.

本论文主要采用硅胶柱层析、RPC—18反相柱、Sephdex LH—20、薄层层析及重结晶等方法，对采自中国南海西沙群岛的软骨凹顶藻Laurencia cartilaginea和略大凹顶藻Laurencia majuscula的化学成分进行研究，共得到12种化合物，并运用各种波谱手段对得到的化合物进行了结构鉴定。

Objective To study the chemical constituents of the roots of Ligularia stenocephala.

目的研究窄头橐吾根部的化学成分。

Objective:To study the chemical constituents of Ligularia vellerea .

目的 ：研究棉毛橐吾药用部位的化学成分。

OBJECTIVE To investigate the chemical constituents of the roots and rhizomes of Ligularia macrophylla.

目的研究大叶橐吾的化学成分。

Objective To study the chemical constituents of the roots of Ligularia stenocephala.

目的 研究窄头橐吾根部的化学成分。

MethodsWith chloroform as solvent, the liposoluble constituents in Ligularia fischeri were extracted by ultrasonic extraction. The extracted substances were isolated and identified by GC-MS.

方法以氯仿为溶剂超声提取蹄叶橐吾的脂溶性成分，利用气相色谱-质谱联用仪对提得物质进行分离和鉴定。

PartⅣStudy on the chemical constituents of Ligularia atroviolaceaLigularia species is a perennial herb from Compositae,and mainly distributed in damp,shaded areas of western China,especially the provinces of Gansu, Sichuan and Yunnan.

第四部分黑紫橐吾化学成分研究黑紫橐吾Ligularia atroviolacea为菊科千里光族橐吾属多年生草本植物，生长于海拔3000-4000米的高山草地之中，广泛分布于我国云南西北部、四川、贵州、湖北西部和甘肃西南部等地。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。