I keep my referance books near my dest for convenience.
我把参考书放在书桌旁边用着方便。
The theoretical calculation method for the friction resistance produced by O-sealing washer is seldom expounded in existing referance materials and document.
现有的资料及文献对O形密封圈产生摩擦阻力的理论计算方法介绍甚少。
The main results indicated:1 Through repeated experiments, the best technology and referance data of laboratory manufacture on polysaccharide edible packaging film was confirmed.
通过试验确定了多糖类可食包装膜实验室制膜的最佳工艺及其参数。
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