Why can the obverse side that the supermarket controls silver bar give black to come with hard thing picture ? why is its opposite not ok ? ? request to solve ! thank 为什么超市收银条的正面可以用坚硬物画出黑色来？又为什么它的反面不可以？ ？请求解答！谢谢！
On the obverse , the traditional goddess of victory , a design used since the 1928 amsterdam games , accompanied by the specific inscription " xx olympiade m nchen 1972 " 奖牌正面是自1928年阿姆斯特丹奥运会以来一直沿用的胜利女神，并刻有“ 1972年第20届慕尼黑奥运会”字样。
Applying the technology of smooth blasting , the complete section of the surrounding rock and the half section of the broken and the surrounding rock have been excavated at the obverse step 利用光面爆破技术，类围岩全断面一次开挖，类围岩和断层破碎带半断面正台阶开挖。
By comparing the influence of all kinds of factors and analyzing prominent influence factors , we confirmed prominent influence factors and correlative coefficients through obverse crossing design 同时，通过正交设计，确定显著影响因素和各相关系数，并用回归分析方法建立了地区专业测强曲线。
That year , " through carelessness or overzealousness , " hoge said , a defective dye for the obverse , or head , side of the 1 - cent piece failed to show the " d " mark indicating it was struck at the denver mint Hoge说：那一年，由于“仓促大意” ，一批一分硬币的颜色被染错，导致代表丹佛造币厂的d没有印上。
But it is a rash act to regard this relation between religion ( christianity ) and science as a simple way and disclaim a kind of obverse significance what christianity do during science produce actually 但以简单的方式看待宗教(基督教)和科学的关系，否认其对于科学的实际发生所具有的某种正面意义，则是一种轻率的行为。
