经过筛选和加工，其中有的可以作为“探究性课题”，成为数学课堂教学的学习材料。
After selecting and processing, a part of them, as the research-based tasks, could become the materials of teaching mathematical knowledge in classroom.
将干材料全部混合过筛，置入搅拌盆中，并加入牛油丁，揉成面团。
Sift together the dry ingredients into mixing bowl. Add in diced butter and knead to form dough.
通过筛分选样，对内蒙古锡盟地区大量蕴藏的火山渣及火山渣混凝土进行了材料性能实验研究。
Based on screening and sampling, properties of trass and trass concrete in Ximeng area of Inner Mongolia was studied.
结论：经过筛选确大理州定凤仪青皮蚕豆敏感性好，是一种有价值的微核实验的材料。
CONCLUSION:It suggested that the Feng-yi green vicia faba had good sensitive , and sift through of root tip cell in micronuc…
结论：经过筛选确大理州定凤仪青皮蚕豆敏感性好，是一种有价值的微核实验的材料。
CONCLUSION:It suggested that the Feng-yi green vicia faba had good sensitive , and sift through of root tip cell in micronuc…
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