产气的的

In combination with the geological features of the ga wells in West Sichuan, such as multi-payzone high pressure gradients and a large lithological change in channel sand bodies, etc., the casing cementing and perforation completion were adopted for the main well and branch holes in the well group and the interzonal pressure seals of the main well and branch holes, and the separate well fracturing and producing were all realized through a completion string with dual-tubing and dual-packer.

结合川西地区气井多产层、高压力梯度、河道砂体岩性变化大等地质特点，该井组主井眼和分支井眼均采用套管固井、射孔完成，通过双油管和双封隔器的完井管柱实现了主井眼和分支井眼的层间压力分隔和分井压裂、分井采气。

Methods Two hundred and fifty women during delivery were randomly divided into 5 groups, PCEA group, nitrous oxide group, analgesic drug group, acupuncture site water injection group, and placebo served as blank control group. The analgetic effect, delivery procedure, postpartum hemorrhage, childbirth way, and the newborns Apgar scores were compared and statistically analyzed.

选取250例产妇随机分为产妇自控硬膜外镇痛组、笑气吸入镇痛组、药物镇痛组、穴位注射无菌用水组和未给予任何镇痛措施的对照组，并分别观察五组产妇的镇痛效果、产程时间、分娩方式、产后出血量和新生儿预后等情况。

The essential oil was obtained from the fresh aerial parts of coriander Coriandrum sativum L .

采用气相色谱/质谱联机对水蒸汽蒸馏得到的黑龙江产芫荽茎叶精油的芳香成分进行了分析。

Under these conditions, the gasifier can obtain appropriate temperature and high effective gas yield and secure stable operation.

在这些条件下，可达到合适的气化炉温度，获得高的有效气产率，并保证稳定运行。

To J2108-offset printing machine, for example, in a normal voices in the production of exhilarating main motor, gas, and carry it teeth and delivery chain, as well as wall panels in the ink roller movement parts, components, or even oilway swayig, and so on, which will make a sound.

以J2108型胶印机为例，在变态的不入产历程洋百般不韵音齐鸣，宾电机、气路、叼牙、收纸链条，以及墙板边的水墨辊窜不静部件、摆不静部件，甚至油路等，这些部位城市不收不入不韵音。

Through the impeller's spinning, produce water leap, form water film and spray, have a big air-contact surface and bigger aerating action.

通过叶轮的旋转，产生水跃，形成水膜及水花，与空气接触面大，有较大的曝气作用。

Three high volatile bituminous coals were used pyrolysis with solid heat carrier to investigate the product distribution and characteristic of gas, tar and char.

以三种高挥发分烟煤为原料，对固体热载体煤热解获得的气、油、焦产物产率、组成和性质进行了考察。

Gas-lift pump for wells, the only recovery to extract the engine fuel flow, using the wells in gas-driven gas compressor output.

气举泵用于气井时，仅在采出液流中提取发动机燃料，用该井的产出气驱动气体压缩机。

When mixed with oil in the air, easy in its high-pressure area formed cavitation, and pressure wave form of communication, caused by oil shocks, resulting in cavitation noise generated.

当油液中混入空气后，易在其高压区形成气穴现象，并以压力波的形式传播，造成油液振荡，导致系统产生气蚀噪声。

In this study a 50 kilotons industrial-scale ALR has been designed based on the safety criteria of high-pressure tank regulations in the handbook of the American Society of Mechanical Engineers.

本研究依据美国国家标准American Society of Mechanical Engineers规范设计，符合压力容器安全规范的50吨工业量产级气举式生物反应器的机械设计。

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。