starting grade

The effects of reducting atmosphere and firing temperature on the sintering synthesis of hercynite clinker were studied using special grade bauxite and iron scale powder as main starting materials.

研究了以特级矾土和铁鳞为原料，采用烧结法合成铁铝尖晶石时，还原气氛和烧结温度的影响。

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The feasibility of manufacturing one-fire cordierite push bat brick for kilns burning porcelain by using chamotte, sintered magnesia clinker and special grade bauxite as starting materials has been expounded.

阐述了以低铝熟料、烧结镁砂、特级高铝矾土为原料制备的堇青石为基质.一次性烧成陶瓷窑用推板砖工艺的可行性。

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I grew up in a cautious, conformist era in American history. I had enough adolescent vanity that I sometimes refused to wear the thick glasses I had needed since I was nine to correct my terrible eyesight. My friend starting in sixth grade, Betsy Johnson, led me around town like a Seeing Eye dog.

由于近视，我从九岁开始戴眼镜，渐渐长大后，有时虚荣心作祟，就会摘下又厚又重的眼镜，由小学六年级结识的好友贝琪·约翰逊充当“导盲犬”，带着我到市区逛街。

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With the increase of learning difficulty starting from grade seven, some students might be afraid of this learning difficulty. This phenomenon is quite common in ordinary schools.

从七年级下学期开始，随着几何学习的难度增大，部分学生对数学学习产生畏难情绪，尤其是在普通学校表现得更为突出。

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She wanted me to teach her starting from Grade One.

她希望我能从一年级的知识开始教她。

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