Stone cage net protective structure is in itself under the action of gravity for the installation.
石笼网防护结构是在其本身重力的作用下进行安装的。
Gravity ball check valves are converted to vent valves by replacing the standard ball with a floater ball and inverting the valve at installation-with seat up.
重力球形止回阀可以变为通风阀，只需用漂浮球体更换标准球体，然后在安装时将阀门倒置，使其阀座向上即可。
The novel toy is simple durable, having easy installation. The wing position and a model gravity center can be adjusted to obtain more perfect flying state.
本新型玩具简单耐用，易于安装，并且可调节机翼位置及模型重心，以获得更完美的飞行状态。
Factory equipment, automatic installation line group, spraying gravity line, co2 welding, presses, lathes, etc.
工厂设备齐全，自动安装线组，喷涂自流线，co2保护焊、冲床、车床等。
During the installation of large structures on the sea, the weight and gravity-center values of the structures should be very accurate, considering the lifting capability of the operating apparatus.
大型结构物在海上安装过程中，受到作业机具吊装能力等因素的影响，需要准确的结构物重量和重心数值。
During the installation of large structures on the sea, the weight and gravity-center values of the structures should be very accurate, considering the lifting capability of the operating apparatus.
大型结构物在海上安装过程中，受到作业机具吊装能力等因素的影响，需要准确的结构物重量和重心数值。
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