heading line meaning in Chinese

标题行
方位线
方向线
航向线
雷达船首线标志
首向标志线
首向指示
艏向线

Smooth head line , leathering steering . bullard
流线形车头,真皮包裹的方向盘. bullard ！
Mathematical model of the power frequency electric field under high voltage over head line
高压架空输电线下工频电场的数学模型
Steel products . bars with improved bond for concrete poles , supports for over head lines
钢制品.架空线路支架混凝土电杆用带改进粘附性的棒材
Some boats also use a " tag line " or " head line " from the stern of the boat to the anchor line , which serves as a guide in a current so that it is easier to reach the anchor line for ascents and descents
一些船还用“标志绳”或“顶绳”从船尾连接到锚绳作为水流的指引，以便潜水人在上升和下降时更容易地找到锚绳。
In at workmanship , reflect for being latent to last pairs of whirlpool the lines and assistant of whirlpool head line from level to the more latent to get up , by the more simple to develop jade article to in great numbers direction until spring and autumn line decorations not sub , have evolved and laid the foundation for the great transmutation of jade articles in the warring states
在作工上，地子纹饰为隐起双涡纹和涡头羽翼纹，反映春秋玉器由平面向隐起由简向繁的方向演变，为战国玉器的重大嬗变演化打下了基础。