lower mast

基本解釋

HK to lower flag at half-mast to mourn victims.
香港下半旗向在菲律賓受害者致哀。
Jackup mast for marine drilling operation realizes hoisting of the mast by means of the pulley mechanism on the lower part of the mast.
自升式井架是目前海洋鉆井工程中應(yīng)用較多的新型井架，它利用井架底段的滑輪機(jī)構(gòu)進(jìn)行井架的起升操作。
Grandfather threaded the handkerchief to the mast using grass that fit nicely through the lace, first along the upper beam, then the lower one.
爺爺將手帕綁在“桅桿”上，用青草正好能穿過蕾絲花邊，先是上面的橫梁，然后是下面的。