noiselessness

/ˈnɔɪzlɪsnɪs/
the property of making no noise

noun [抽象名词] 安静;无声

They moved with absolute noiselessness. 他们绝对无声地移动。

后缀: lessness 【noun】 缺乏某种特性或状态 - indicating the lack of a particular quality or state 原词: noiselessness 是通过后缀 【lessness】 构成的派生词
单词造句:
网友用 “Noiselessness” 造句精选
With brand new design, noiselessness and excellent quality in the welding spot, the welder is able to precisely control the welding energy. 设计新颖,能精确控制焊接能量,无噪音,焊点质量好。
The fanless design ensures complete noiselessness and maintenance-free operation. 无风扇设计,无噪音维护便捷。