不成熟的

The functional requirements, operating principles, and design schemes, including optical systems and mechanical structures, of fire control target verifiers are briefed.

简述了用於测试平视显示器和照相枪主要性能的火控校靶仪的功能需求、工作原理和设计方案，包括光学系统和机械结构。

Keel is not moistureproof: Be in normally without dry wooden keel moisture content 25% the left and right sides, and eligible wooden floor moisture content is in commonly 12%, humidity has differred congress to make wooden floor sucks tide quickly, cause blowout of face of the arch since the floor, lacquer.

龙骨未防潮：未经干燥的木龙骨含水率通常在25%左右，而合格的木地板含水率一般在12%，湿度差过大会使木地板快速吸潮，造成地板起拱、漆面爆裂。