不少兵器在设计和生产定型时都需要进行成套的尺寸链计算，以便对零件的可装配性进行检验，保证系统的精度要求。
Many arms demand dimensional chain calculation in process of design and finalize the design in order to test the assembly characters of the parts and assure the system precision requirement.
PL RA 1443有优良的粘着力、磨革性及压花定型性，可遮盖皮面各种轻重伤残，提高皮面等级率及平滑度。
PL ra 1443 has excellent adhesive, covering, buffed and embossing properties. It can improve the grade and smoothness when PL ra 1443 is used for low grade leather.
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