quadruplex meaning in English

adj.
1.四倍的，四重的。
2.【电学】四心电缆的；(同一线路中)四重信号的；【生物学】四式的。
n.
四工电讯机；【生物学】四式，四显性组合。

Smpte video recording - cartridge spools - 2 - in quadruplex tape
盒式录像带卷盘. 2英寸四路磁带
In your reviewing the technical value of the quadruplex pump please consider that this unit is equipped with four pulsation dampeners on the discharge side allowing the pump to achieve a uniformity at least comparable with that of a triplex pump
当考虑四泵头的泵的技术价值时，请注意到这一装置在出口侧装有四个脉冲缓冲器，这就可以使泵达到平稳的操作，至少是可以同三泵头的泵相比。