定心头

sweltering heat───酷暑

indexing head───读数器；分度头

blistering heat───酷热

centering───n.置于中心位置；拱鹰架（等于centring）

centerings───居中

entering into───进入；讨论；成为…的一部分；研讨；分享；体谅

indexing heads───[机]分度头，分度器

care should be taken to meet the required facial area and face centering guidelines outlined in this brochure when positioning the subject's head to remove the potential glare.───定位被拍摄者头部，去除可能出现的反光时，必须注意拍摄时达到本手册上列出的面部区域和面部居中准则。

head center of the soldering iron head is provided with a centering pin positioned at the center point of the circular ring circle and rising a little altitude than the circular ring plane.───烙铁头的头部中心有一定心针，该定心针位于圆环的圆心处，高度略微高出圆环平面。

The paper described in detail the way and workmanship of centering of double head universal coupling during shafting alignment onboard high performance crafts that have flexible hulls.───本文详细阐述了具有柔性船体的高性能船体上轴系对中过程中双头万向联轴节的定位法和工艺。