Through contact guidance to encourage children's creation and performance.
通过隐形指导鼓励幼儿的创造与表现。
Single-direction and double-direction angular contact thrust ball bearings (Figures 1.50 and 1.51) are used for machine tool spindles requiring rigid axial guidance.
单向和双向推力角接触球轴承(图1.50和1.51)都用机床主轴轴向刚性作为指导。
To discuss an alternative approach, contact the FDA staff responsible for this guidance as listed on the title page.
如需讨论替代方法,请联系fda负责本指南的人员,联系方式列在标题页。
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