查询词典 asphalt

It lays a foundation for the study on the low-temperature rheologic properties of asphalt.

该系统全部硬件化、构造简单、测定精度高，为沥青低温流变性的研究奠定了试验基础。

Accordingly, in this thesis the low-temperature rheologic rule of asphalt is studied entirely and systemically for the first time within wide temperature and shear rate by means of sliding-plate viscometer system, and following achievements are obtained

因此本文利用自行开发的滑板测粘系统，在较大温度范围和较大剪应力分布的范围内，首次对沥青低温的流变基本规律进行了比较全面、系统的研究，取得了以下成果

Finally it is suggested that some programs for research may be considered on the asphalt and petroleum residues.

与此同时，笔者对国产沥青和渣油提出可供考虑的研究内容。

Objective:The purpose of the experiment was to study the carcinogenic and mutagenic effects of petroleum asphalt.

目的：研究石油沥青有无致突变和致癌作用。方法：选用大鼠经口急性毒性试验、Ames试验、小鼠经口微核试验、大鼠气管注入及兔经皮涂抹致癌试验，研究石油氧化及直馏沥青的急性毒性以及致癌和致突变作用。

Petroleum asphalt ; Toxicity ; Experimental study ; Mutagenicity

石油沥青；毒性；实验研究；致突变性

When dealing with petroleum asphalt and bituminous emulsion, scrape of the excess material and scrub the surface with scouring powder and water.

用石油和沥青混合液以及乳胶漆擦掉多余的部分，并用掺水的清洁粉擦洗表面。

The preparation process and product properties of a new kind of one-component moisture curing petroleum asphalt polyurethane waterproof coatings were introduced.

介绍了一种新型湿固化单组分石油沥青聚氨酯防水涂料的制备工艺和产品性能，并且对工艺配方中原料选择和影响因素进行了讨论。

Methods Acute oral toxicity test, subchronic inhalation toxicity test and mutagenicity test were conducted to observe the effects of petroleum asphalt in experimental animals.

方法通过石油沥青急性经口毒性、亚慢性吸入毒性及遗传毒性的实验研究，观察在该实验条件下，石油沥青对受试动物的影响。

The authors have made a microelectrode with the material of petroleum asphalt fiber.

屠一锋，徐萍，超大比表面石油沥青基碳纤维微电极研究

Petroleum asphalt ; Bap concentration ; acute toxicity ; Ames test ; micronuleus test ; carcinogenic test

石油沥青； Bap含量；急性毒性； Ames试验；微核试验；致癌试验

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。