The filament drive included a trailing weight and a preheater . 长丝体的传动部分包括一个拖拉重锤和一个预热器。
2.
The filament drive included a trailing weight and a preheater . 长丝体的传动部分包括：一个拖拉重锤和一个预热器。
3.
The filament drive included a trailing weight and a preheater . 长丝体的传动部分包括：一个拖拉重锤，一个预热器进行加热。
4.
The instrument includes a weight suspended in a spring connected to a registering needle which notes the vibration on a strip of celluloid . 这种仪器有一个重锤悬在与记录针联接的弹簧下面。记录针在一条电影胶片上记录振动。
5.
Hammer dredge is a technical improvement of the existing dredge sampler 摘要重锤式拖网取样器是对现行常规拖网的技术改进。
