前锋区

变质水则是含矿变质热液的主体并趋向于在变质前锋区及前锋区前成矿；

Metamorphic water constitutes most of ore-bearing metamorphic hydrothermal water , which tends to mineralize in metamorphic front region and before the front region .

需要：麦卡西必须在他的后防线上多花点心思，也必须找回一个能进球的前锋来跳出降级区。

What they need : Mick McCarthy must add some steel to his back line , and find a striker that can score the goals to get them out of the relegation zone .

本文结合了实验室结果和几个野外实例来说明地震法可以被用来圈划油层中的高温区，跟踪高温前锋以及测量高温区的体积等。

Laboratorial result and some field examples are taken to show that we can use seismic method to map the high-temperature extent in reservoir , to track the high-temperature front , to measure the volume of the high temperature extent and so forth .