1·The main fuel tank must have all the following: a filler tube, a ventilation system, fuel pickup tube and filter, plus a gauge-sending unit.
油箱必须装备以下元件：加油管、油箱通风系统、吸入管、滤清器和油量传感装置。
2·The GRC tube filler used as internal mold has prospect in small span bridge.
GRC薄壁筒芯是一种有发展前景的应用于小跨度桥梁的内模。
3·The cross-section distortion of bent tube is very small by using ball filler push bending process, with the ovality less than 1.5%.
运用珠粒填料推弯成形工艺成形出的管材截面畸变程度很小，椭圆度不超过1.5%。