Methods 207 auto-mixed poly rubber impressions and 230 alginate impressions were fabricated for restorations to compare their accuracy.
方法:分别用自动混合型聚醚橡胶和藻酸钾印模材料制取修复体印模207例、230例,比较印模精确性。
Rubber poly v-belt is the new type transmission belt with a lot of ad-vantages.
多楔带作为一种新型的传动带,具有许多优点。
Rubber poly v-belt is the new type transmission belt with a lot of ad-vantages.
多楔带作为一种新型的传动带,具有许多优点。
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