The phrase "fall down to the bottom" is correct and it is a commonly used phrase in written English. You can use it when you want to describe something descending rapidly or suddenly making a steep decline, such as the stock market. For example, "The stock market had a dramatic crash, and the prices fell down to the bottom.".
Particles placed at the top of either slope would fall down to the bottom under the pull of gravity.
"While we might in the future accidentally make contact with the enemy, that type of operation is going to fall down to the bottom of your list," Nicholson says.
All the curves start rising at first, decline smoothly for a moment when reach the top valve, and fall down to the bottom sharply.
However, during the cladding process, WC particles tend to fall down to the bottom of the melted coating, and as a consequence, the percentage of carbides increases near the interface with the C45E steel substrate, and decreases on the top of the coating.
Shifting from the top tray right on down to the third one allows for easy disposal of the litter, while the clean litter falls down to the bottom and can still be used.
Briefly, flies became uncoordinated within 1 minute and fell down to the bottom of the tubes.
Mandarin fish might not be able to accomplish its relatively long process of prey recognition before the offered food pellet has fallen down to the bottom of the tank and can no longer be perceived by its sensory organs.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK