Frontal and head loss of hair, People seem very old, not the spirit.
发额角、头顶脱发，显得人苍老，很没有精神。
The medium has an excellent purification efficiency and a very low head loss.
该介质显示优异的净化效率和极低的压降。
The full round port area provides maximum flow capacity and minimum head loss.
完全的圆形流道截面能够提供最大的流量和最小的流压损失。
Using a mirror, check your head for hair loss.
照一下镜子，看下你的头上有没有掉头发。
At the onset a sudden loss of consciousness, dropping and caused head injury.
发病时突发意识丧失、摔倒，致头部外伤。
At the onset a sudden loss of consciousness, dropping and caused head injury.
发病时突发意识丧失、摔倒，致头部外伤。
应用推荐