black print paper

Production conditions and technical requirements of camshaft used for Xiali gasoline engine was introduced, the abnormal graphite (black line) found in the chilled zone was analyzed, and the wearing-resistance of the black line zone was tested.

介绍了天津夏利汽油机凸轮轴的生产条件和技术要求,分析了其激泠部位的石墨异常析出(黑线)现象,并进行了辚线的耐磨性试验,试验结果:黑线处磨损体积为白口区的1。

By means of the examination and the analysis on the medium heavy plates with black line,the origin of black line at the cutting end of the medium heavy steel plates are found out.

通过对有黑线的中厚钢板进行相关的检验和分析,弄清中厚钢板剪切端面黑线的形成原因。

Selecting test for Apodemus agrarius and Microtus brandti to several kinds of food;

黑线姬鼠和布氏田鼠对一些食物的实验室适口性试验

Investigation of Apodemus agrarius and its ectoparasites in frontiers of Russia and northeast China;

东北中俄边境地区黑线姬鼠及体外寄生虫的调查研究

Study on the Seasonal Population Dynamics and Population Reproduction of Apodemus agrarius in 2001-2005 at Yuqing County;

余庆县2001至2005年黑线姬鼠种群动态和繁殖规律研究