She looked up with a concerned air.
她以关心的神情抬头望了望。
She looked up with a concerned air.
她用关心的神情抬头看了看。
Coiler can volume is concerned with coiler can size. The diameter of air vent is a critical factor in designing the can size. Coiler can volume can reach its maximum of some value.
条筒容量的大小与条筒尺寸设计有关，气孔直径起重要作用，只有当其取某一适当值时，条筒容量才达到最大。
Coiler can volume is concerned with coiler can size. The diameter of air vent is a critical factor in designing the can size. Coiler can volume can reach its maximum of some value.
条筒容量的大小与条筒尺寸设计有关，气孔直径起重要作用，只有当其取某一适当值时，条筒容量才达到最大。
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