| natural circulation(noun, expression, flow, stream, channel) |
| natural flow(noun, expression, flow, stream, channel) |
| natural stream(noun, expression, flow, stream, channel) |
| open-channel flow(noun, expression, flow, stream, channel) |
| open water(noun, expression, flow, stream, channel) |
| open water passage(noun, expression, flow, stream, channel) |
| ordinary flooding(noun, expression, flow, stream, channel) |
| outflow(noun, movement, course, current, motion) |
| outpouring(noun, movement, course, current, motion) |
| self-service cafeteria(noun, expression, diner, eatery, eating house) |
| self-service restaurant(noun, expression, diner, eatery, eating house) |
| stream(noun, movement, course, current, motion) |
| streamline flow(noun, expression, flow, stream, channel) |
| streamlined flow(noun, expression, flow, stream, channel) |
| strip irrigation(noun, expression, flow, stream, channel) |
| underwater diving apparatus(noun, expression, swimming, diving, scuba diving) |
| undisturbed flotation(noun, expression, flow, stream, channel) |
| undisturbed stream(noun, expression, flow, stream, channel) |
| unperturbed flow(noun, expression, flow, stream, channel) |
| unresisted flow(noun, expression, flow, stream, channel) |