中文字幕一区二区三区精品,耻辱の中出し授业大桥未久下集,脱了内裤猛烈进入A片视频免费,亚洲欧美自偷自拍另类小说

Welcome to the official website of Wuxi Chenna Machinery Co., Ltd. (Changzhou Chenna Hydraulic Machinery Co., Ltd.)!
LANGUAGE:CNEN
Precision piston rod

Professional Sincere Honest Win-win

HOTLINE:

+86-158 9532 0613

Hollow shaft features

The space occupied by the hollow shaft is relatively large, but the weight can be reduced. According to the mechanical analysis of the material, when the torque is transmitted through the shaft, the effect of transmitting the torque is greater as the outer section is viewed from the radial section. A thicker shaft diameter is required when the shaft needs to transmit a large torque. Since the effect of transmitting torque at the axial portion is small, hollow is generally used to reduce the weight of the rotating shaft.
2019/09/25 09:36:21 2344 次


Related Documents
Copy right ? 2019 Wuxi Chenna Machinery Co., Ltd.(Changzhou Chenna Hydraulic Machinery Co., Ltd.) All rights reserved.