upper carrier顶部: top; upper apex; top half; h ...承载: bear the weight of; load bea ...钢: sharpen; strop; whet承载钢索: bearer cable; track rope底部承载板: lower carrier下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:顶部承载钢，即可在微信中查询翻译
