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back side grid bar：后尘棒

"后导梭板","back shuttle guide" | "后尘棒","back side grid bar" | "底毛圈","back side loop"

back beam：後射波束

"back azimuth","反方位角" | "back beam","后射波束" | "back bearing","反方位"

back beam：经轴;后梁

"后杆","back bar" | "经轴;后梁","back beam" | "后斜齿轮","back bevel"

back beam：经轴

back and face effect 正背效应 | back beam 经轴 | back coating 背面涂层

back scattered electron beam：背散射电子束

back scattered electron || 背散射电子 | back scattered electron beam || 背散射电子束 | back scattered electron image || 反散射电子图像

BACK CENTER SEAM：后中缝 服装部位英语

back rise width 大裆宽(裤子上的) 服装部位英语 | back center seam 后中缝 服装部位英语 | back length 后背长 服装部位英语

BACK CENTER SEAM：后背中缝 服装部位英语

back neck point 后颈椎点 服装部位英语 | back center seam 后背中缝 服装部位英语 | back length 后长

BACK CENTER LINE：后中线 服装部位英语

back width 背宽 服装部位英语 | back center line 后中线 服装部位英语 | back neck line 后领圆线 服装部位英语

back row center：后排中锋

后滚翻 back roll | 后排中锋 back row center | 后腾空翻 back somersault

answer back check：回答检查

回答 answer back | 回答检查 answer back check | 回答码 answer back code,ABC

phenol red：酚红,苯酚磺酞

phenol reagent 酚试剂 | phenol red 酚红,苯酚磺酞 | phenol red test 酚红排泌试验

accessory equipment：附件

accessory equipment 辅助设备 | accessory equipment 附件 | accessory part 附件