Put accuracychecking target 20m away from muzzle without titling, height of zero line and that of artillery accord with each other;
将精度检查靶放置在距炮口20米处，不得倾斜，零位线高度与火炮高度一致；
2
Beyond checking the report for clarity and accuracy in the presentation of technical data, the author of a research report should review for basic grammatical and mechanical accuracy.