结论：以肋凹作为参照物，建立坐标系，确定进针点的位置，不仅可用于术前估计。
Conclusions: To confirm the internal fixation point, the author build the reference frame by the costal fovea.
其特征是该催化剂系含有一个或两个有机碱基团的四齿席夫碱钴配合 物，具备单活性点引发和可控聚合。
The catalyst is characterized in that the catalyst is a tetradentate schiff base complex contains one or two organic base groups and has single active site initiation and controllable polymerization.
一种高居里点铌酸钾钠锂系无铅压电陶瓷及其制备工艺，涉及一种性能优良的无铅压 电陶瓷组合物的配方及制备工艺。
The present invention relates to lead-less piezoelectric ceramic composition and is especially one kind of lead-less Li-Na-K niobate piezoelectric ceramic and its preparation process.
应急服务信息，包括应急救助、沉船沉物打捞等联 系方式，待命点，服务内容等信息。
Emergency service, including the information about the contact and standby point for emergency rescue, salvage of ships' wreck;
应急服务信息，包括应急救助、沉船沉物打捞等联 系方式，待命点，服务内容等信息。
Emergency service, including the information about the contact and standby point for emergency rescue, salvage of ships' wreck;
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