The test consists of locating the gaps in a graduated series of sizes of incomplete rings whose radial thickness and gap are equal to one-fifth the diameter of the ring.
这种测试由固定的分等级系列的不完整环的间隙组成，这些环的径向厚度和间隙为环的直径的五分之一。
The test consists of locating the gaps in a graduated series of sizes of incomplete rings whose radial thickness and gap are equal to one-fifth the diameter of the ring.
这种测试由固定的分等级系列的不完整环的间隙组成，这些环的径向厚度和间隙为环的直径的五分之一。
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