under bracing meaning in English

帮桩
下支撑

Irrigating devices help to flush out corners under braces and bridgework, but they're not effective substitutes for brushing and other physical means .
冲洗器有助于冲洗支架和桥托下的角落，但它们不能有效地代替刷牙和其他物理方法。
In trials run under brace or small pack procedures , hounds should remain within control distance of the handler , and should be obedient to his commands
比赛中，猎犬应该始终在牵犬人绳带的控制范围内，并且听从牵犬人的命令。