欧美日本黑人一区二区,人妻日韩亚洲精品视频,丝袜视频日本成人午夜视频,全国无a一区二区三区,香港三级精品三级在线专区,在线看片免费人成视久网app,内射白嫩大屁股在线播放91,成为人免费高清视频视频,中文字幕一区视频播放

1.1 the assembly must be carried out in accordance with the design, process requirements, this regulation and relevant standards.

1.2 the assembly environment must be clean. The assembly environment temperature, humidity, dust prevention, lighting and shockproof of high-precision products must comply with relevant regulations.

1.3 all parts (including purchased and outsourced parts) must have inspection certificates before assembly.

1.4 parts must be cleaned and cleaned before assembly, without burr, flash, scale, rust, chips, sand, dust and oil, and shall meet the corresponding cleanliness requirements.

1.5 parts shall not be bumped, scratched or rusted during assembly.

1.6 parts with wet paint shall not be assembled.

1.7 for relatively moving parts, lubricating oil (grease) shall be added between the contact surfaces during assembly.

1.8 the relative position of all parts and components shall be accurate after assembly.

1.9 in principle, stepping on the machine is not allowed during assembly. Special measures shall be taken when special parts must be operated on the machine