专为沃尔沃收音机设计的天线系统可以在所有条件下提供最佳的接收效果。
Aerials specially designed for Volvo's radio units to provide the best reception under all conditions.
在所有条件相同的条件下，一口压裂30段的井中每个层段的示踪剂量占所有被注入井下示踪剂总量的3%到4%。
All things being equal, on a 30-stage well, the tracers from each stage would represent between 3% and 4% of the total concentration of tracer material sent downhole.
在所有条件相同的条件下，一口压裂30段的井中每个层段的示踪剂量占所有被注入井下示踪剂总量的3%到4%。
All things being equal, on a 30-stage well, the tracers from each stage would represent between 3% and 4% of the total concentration of tracer material sent downhole.
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