chassis

詳細解釋：

chas.sis

n.（名詞）
【複數】 chas.sis[-ôz]
The rectangular steel frame, supported on springs and attached to the axles, that holds the body and motor of an automotive vehicle.
底盤：連於車軸上且用彈簧支撐的長方形鋼架，用以固定機動車輛的車身及發動機
The landing gear of an aircraft, including the wheels, skids, floats, and other structures that support the aircraft on land or water.
起落架：飛機的著陸裝置，包括輪子、滑橇、浮碼頭以及其他在陸地或水上的支撐裝置
The frame on which a gun carriage moves forward and backward.
炮底架：炮架在其上前後移動的炮底架
The framework to which the components of a radio, television, or other electronic equipment are attached.
底架：無線電、電視或其它電子儀器的組成部分都安裝於其上的框架

來源：
French chassis [frame]
法文 chassis [框架]
from Old French
源自 古法文
from Vulgar Latin *capsocium
源自 俗拉丁語 *capsocium
from Latin capsa [box]
源自 拉丁語 capsa [盒子]