“double groove”可以造什么句，double groove造句

2、So this paper is related to the study of basic forming principles of cold rolling for double groove ball bearing outer rings from theory, numerical simulation and experiment.

1、Rubber boot must have double groove on lip and not single as per your sample.

3、The double groove steel is suspended under the two nodes of bottom chord of steel roof truss to prevent the bottom chord from stretch bending.