iris diaphragm
danh từ (noun)
Nghĩa chính
- Khóa nhãndanh từAn adjustable diaphragm by which the diameter of an approximately circular opening may be controlled, as for regulating the aperture of a lens; it consists of a number of movable thin curved plates fastened at regular intervals around the inside of a ring, the positions of which are simultaneously adjusted by a single knob on the outside of the lens. It is used in cameras and microscopes.
Dạng từ (word form)
theo quy tắc (regular)- iris diaphragmDạng gốc (base form)
- iris diaphragmsSố nhiều (plural)