track level bar 水平尺
adjustment of track level 轨距水准仪调整
track level WESTBANK 轨道水平尺
track cross level 轨道水平 ; 左右水平
track gauge level gauge 轨距水平测量仪
high-level track and field 高水平田径
track gearbox oil level 履带齿轮箱油面
Interlocking device for level track 平道闭锁装置
Combined Level And Track Gage 轨距及水平两用尺
Freezing mud that reached track level could derail a train, and rock salt kept the mud soft.
铁轨周围结冰的泥土会造成火车脱轨,岩盐可以使泥土保持松软。
With women a second factor comes into play, most seem to enjoy the flexible-time arrangement (once known as the "mommy track") and never find their way back to full-time or high-level employment.
对于女性来说,第二个因素也起了作用,大多数女性似乎都很享受弹性的工作时间安排(曾经被称为“妈妈轨道”),她们再也找不到全职或高水平的工作。
Now that you know your fitness level, keep track of your progress.
现在你已经知道了你的健康水平,保持跟踪你的健身进度。
There's a lot of engineering that we've already talked about in terms of producing quantities of the vaccine, producing it reliably, producing it safe, distributing it, and keeping track requires a level of sophistication that maybe you wouldn't have thought about initially.
我们已经讲过很多工程方面的内容,比如大批量制造疫苗,制造可靠的疫苗,制造安全的疫苗,分派发放疫苗,以及一个完善的随访监测系统,你们最早可能没有想过这些冬夜
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