A bend in a pipe, bar, or other straight continuous piece made to allow it to pass around an obstruction.
A bend in a pipe, bar, or other straight continuous piece made to allow it to pass around an obstruction.
弯管，接头管管子、杆或其他直而长的东西的一个弯，使得它能避开一障碍物
A bend in a pipe, bar, or other straight continuous piece made to allow it to pass around an obstruction.
弯管，接头管管子、杆或其他直而长的东西的一个弯，使得它能避开一障碍物