地下的

It has to be tall because it is like a giant block and tackle, and we have to lower into the ground NEW CONCEPT ENGLISH-BOOK FOUR and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.

井架必须很高，因为它像一个巨型滑轮组。我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

It has to be tail because it is like a giant block and tackle, and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom

井架必须很高，因为它像一个巨型滑轮组。我们必须把很大的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

It has to be tall because it is like a giant block and tackle ,and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are roated bu an engine at the top and are fitted with a cutting bit at the bottom.

井架必须很高，因为它像个巨型滑轮组。我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

The actual number of samples taken was 41 in development, 17 in the mining team, 10 in underground maintenance, 2 in underground transport, 10 in the washing plant, 10 in ash and cinders, 6 in boiler and turbine, and one in each of administration and electricity.

拿取的样品的实际数量是41在开发中， 17在采矿队， 10在地下维护， 2在地下运输， 10在洗涤的植物中， 10在灰和炭渣， 6在锅炉和涡轮和一个在其中每一管理和电。

In these years, it has been taking effect in many fields such as in mineral resource, in oilfield, in coalfield, prospecting, frozen earth, ocean geology .etc.

在工业无损检测和建筑行业中的质量检测、城市地下管道的质量检测、地下考古方面也有很大的应用前景。

And we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.

我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

And the crop water requirement coefficients based on Chinese Evaporimeter and the Crop Coefficients Kc were estimated accordingly.

田间试验设置在灌水定额相同的情况下，灌水方式和灌溉水质(加入0，10和20%的地下咸水)对灌水沟中土壤剖面盐分累积和玉米产量及地下水位的影响。

With the fast development of exploitation and utilization of underground space, the safety problems become more and more important.

随着我国地下空间开发利用的快速发展，地下空间的安全问题已占据越来越重要的地位。

The paper introduces present development of the coal gasify underground at hand and aboard, analyses developing trend in the future, and puts forward some problems required to be solved.

对国内外煤炭地下气化的发展过程及我国近几年来煤炭地下气化的高速发展进行了阐述，分析了今后的发展趋势。

Underneath Piccadilly Circus, there is an important tube station with escalators leading down to two different lines.

在皮卡迪里广场的地下，是一处重要的地铁站。自动扶梯连接着地下两条不同的地铁线路。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。