油井

Pump dynamometer card shape directly reflects the characteristics of different factors that influence the working performance of sucker rod pump performance.

结合实例，对仿真得出的泵功图进行分析，找出了影响泵况的主要因素，通过参数调整，改善了抽油泵性能，提高了油井效率。

In this thesis , in order to make the beam pumper save energy and improve efficiency , the problem of dry and empty pumping and parking monitor are analysised and researched .

本文围绕游梁式抽油机节能降耗，提高效率，针对油井的空抽问题和停机监控问题进行分析研究，设计了抽油用自适应电机智能控制系统。

High accuracy , rapidness and automation are the growth trends of low producing well metering .

高精度，快速化，自动化是低产油井计量的发展方向。

A roustabout is a dangerous job that typically pays about $31,000 a year, with high unemployment and a negative outlook for growth, the study said.

研究称，油井工人是一个很危险的职业，一年的收入一般为3.1万美元，而且不稳定、收入增长前景也不好。

Working as a roustabout, in an oil well, is the worst job for those who earn their salary through physical labor.

而在油井工作的杂工，以自己劳力赚取薪资的人，则是最差的一行。

Being an actuary , calculating statistics to determine probability and risk, is the best job to have in 2010, while working on an oil rig as a roustabout is the worst, according to a study released on Tuesday.

本周二发布的一项研究报告称，2010年的最佳职业是从事数据计算、确定可能性和风险的精算师，最差职业是油井工人。

Being an actuary, calculating statistics to determine probabilityand risk, is the best job to have in 2010, while working on an oil rigas a roustabout is the worst, according to a study released on Tuesday.

本周二发布的一项研究报告称，2010年的最佳职业是从事数据计算、确定可能性和风险的精算师，最差职业是油井工人。

A roustabout is a **erous job that typically pays about$31,000 a year, with high unemployment and a negative outlook forgrowth, the study said.

研究称，油井工人是一个很危险的职业，一年的收入一般为3.1万美元，而且不稳定、收入增长前景也不好。

A roustabout is a dangerous job that typically pays about$31,000 a year, with high unemployment and a negative outlook forgrowth, the study said.

研究称，油井工人是一个很危险的职业，一年的收入一般为3.1万美元，而且不稳定、收入增长前景也不好。

Being an actuary, calculating statistics to determine probabilityand risk, is the best job to h****e in 2010, while working on an oil rigas a roustabout is the worst, according to a study released on Tuesday.

本周二发布的一项研究报告称，2010年的最佳职业是从事数据计算、确定可能性和风险的精算师，最差职业是油井工人。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。