How to Use "trapezoidal" with Example Sentences

1. Construction of trapezoidal channel and u-channel at ch2130 .
2. Unscrew the central bolt and set it down in such a way that the conical area or trapezoidal thread cannot get dirty .
3. The purpose of this study is to find the optimal order quantity and discount policy for inventory problem when demands are trapezoidal fuzzy number and quantity discount policy was offered by suppliers .