/ ?mek?n?z?m; ˋm?k?n?z?m/ n
working parts of a machine, etc 機械裝置: a delicate watch mechanism 精細的手表機件 * the firing mechanism of a rifle 步槍的擊發裝置.
parts of an organism or system which work together （機體或裝置的）結構, 構造: the mechanisms of the body 身體的結構.
method or procedure for getting things done 手法; 技巧; 程序: There are no mechanisms for transferring funds from one department to another. 基金無法從壹部門轉移至另壹部門.
device
/ d?va?s; d?ˋva?s/ n
thing made or adapted for a special purpose （為某種用途而制作或改裝的）裝置, 器具: a device for measuring pressure 測壓裝置 * a labour-saving device 節省勞力的裝置 * an explosive device 爆破裝置 * a nuclear device, eg a nuclear bomb or missile 核子裝置（如核彈或核導彈）. =>Usage at machine 用法見machine.
(literature 文學) metaphor, combination of words, etc used by a writer to produce an effect on the reader （作者用以感染讀者的）手法, 技巧（如隱喻、 詞語搭配等）: a stylistic device 文體表現手法.
scheme; trick 策略; 計策; 詭計; 計謀: Her illness is merely a device to avoid seeing him. 她所謂生病只不過是避免見他的花招而已.
symbol or figure used as a sign by a noble family, eg on a crest or shield （貴族用作家族標誌的）圖案（如用於飾章或盾形徽的）: a heraldic device 紋章圖案.
(idm 習語) leave sb to his own devices => leave1.
equipment [e'quip·ment || -m?nt]
n. 裝備, 才能, 設備品
總體對比來說，mechanism是機械的總稱，壹般不指小型的具體的某個東西。
device是設備的總稱，指的是那些具體的小型的，由具體功能的元器件和產品。equipment也是個集合名詞，指裝備，和device用法差不太多。