The hearing loss progressed and the tinnitus became a persistent sensation of varying pitch.
听力一直减退,而且耳鸣变成一种经常不断的,各种音调的感觉.
The Reforming of Machine Tool Based on Machining for Varying Pitch Screw
基于变螺距螺纹加工的普通机床改造
Machining Varying Pitch Screw with Universal Machine Tool
变螺距螺杆的通用机床加工
The mechanism analysis for uniform motion of chain with varying pitch
变节距链的匀速机理分析
Design of Electric Control System of Varying Pitch Propeller on-board
舰船液压变距桨控制系统的改进设计
An Improved Design of Machining for Varying Pitch
加工变螺距螺杆的一种改进设计
A Study of Screw Machining for Varying Pitch
变螺距螺杆加工的研究
A theoretical analysis of the varying pitch screw in mathematics, physics and shaping principle was presented.
对变螺距螺纹的成形原理进行了分析。
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