Complete payment vouchers, true content, explicit purpose, correct calculation, certain time, neat and firm paste. Is not qualified for rendering an account.
付款单据齐全、内容真实、用途明确、计算准确、时间清楚、粘贴整齐、牢固，严禁白条报账。
Study on optimazing measure of neat cement slurry and cement paste for oil well;
本文主要研究了磁化水对水泥砂浆和净浆性能的影响。
Study on optimazing measure of neat cement slurry and cement paste for oil well;
本文主要研究了磁化水对水泥砂浆和净浆性能的影响。
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