①无肌原纤维,可见粗肌丝和细肌丝及中 间丝,若干粗细肌丝聚集形成收缩单位 (contractile unit)(肌丝滑动导致收缩) ②胞膜上有密斑( dense patch ),胞质 内有密体(dense body),为细肌丝附着处 ..
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随着钛在多单位固定桥中应用的增多,需要一种方法将一个修复体中的两个或多个单位连接起来,以减少铸造过程中产生的收缩和变形。
The increasing use of Ti for multiple-unit fixed prosthesis require a method to join two and more unites in a restorative prosthesis to reduce the contraction and distortion in casting process.
近几年来,我国国有商业银行纷纷撤并网点,大幅度收缩经营范围,二级分行已成为主要的面向客户的直接经营单位。
In the recent years, the commercial bank withdraws a lot of institutions, reduces management scores, the second-branch becomes direct management unit.
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