Difference structures are structures subjected to certain mathematical processing, they are introduced for the convenience of solving heavy-atom-containing structures by direct methods.
差值结构是为了便于用直接法求解含重原子晶体结构而引进的一种经过数学加工的结构。
The use of rare earth ball size pulley ink iron casting, both for the convenience of processing, but also so that the performance of steel pulley with good intensity.
大小皮带轮采用稀土球墨铁铸造，既方便加工，又使皮带轮具有钢的性能强度好。
The system, supported by computer network and image processing technology, provides convenience, reliability and scientificity for the management of foot and shoe sole print.
由计算机网络技术和图像处理技术支持的足迹鞋底花纹的查询系统使足迹鞋底花纹的管理可以更加方便可靠和科学。
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