The phrase "automatic opening" is correct and usable in written English.
It can be used to describe a mechanism or feature that opens something without manual intervention, often found in devices or systems.
Example: "The new car model features an automatic opening trunk that activates when you approach with the key fob."
Alternatives: "self-opening" or "automated opening".
Auto-shading is the ability of the e-glasses to automatically increase or decrease the amount of external light, through automatic opening and closing of the aperture when the external light is strong and weak, respectively.
That led to the automatic opening of valves, raising the pressure above what was intended.
Blue2 also features a welcome system which recognizes the driver, while an automatic opening door system enhances the driver's convenience.
The CAPTS included: (1) modular chamber sides, (2) sensors for temperature, CO2, air pressure and humidity that were integrated on a removable chamber cover, and (3) a user-friendly console for control of automatic opening and closing of the chamber cover for data recording, storage and analysis.
Other designations followed which denoted blade finish, manual or automatic opening, or partially serrated blade.
In 2002 Emerson collaborated with Gerber Knives to create both companies' first automatic opening knife, the Gerber-Emerson Alliance. Gerber-Emerson Alliance
What a treat it is to see the bridge of the USS Enterprise, box fresh and gleaming new: it is quite irrationally exciting to hear that strange, echoey-tweety heartbeat of the shipboard computer-system, the klaxon alarm in moments of peril, and the fsssht-fsssht of the automatic doors opening and closing.
The toilet comes with nozzles for front and rear cleansing, a warm air drier, automatic seat opening and closing, heated seats, and automatic flushing.
Two experimental tests were performed, one keeping the doors closed and another using an automatic door-opening device.
You can imagine the usefulness of an automatic eye-opening utility on Facebook that checks a person's other photos and uses them as reference to replace a blink in the latest one.
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