查询词典 string-galvanometer

Based on the practice of the use of φ95mm subsurface sucker rod pump in Shengtuo Oilfield in recent years, the causes of the failure of the pump are analyzed, and relevant precautions are put forward:(1)selecting oil wells with sufficient fluid supply for pumping;(2)under the condition of the pump efficiency being the same, the submergence depth of the pump being somewhat larger than that of the small pump, and 450～500m being feasible;(3)adopting Grade H ultrahigh-strength rod string and fixing a sinker bar at the bottom of the rod string;(4)selecting long stroke and low pumping speed, and more than 5m stroke and less than 6min-1 pumping speed being recommended;(5)adopting zirconium oxide valve ball and seat ＋ spray welded plunger ＋ nitrided barrel.

根据胜坨油田近几年采用φ95mm有杆抽油泵提液的实践，分析了造成这种抽油泵失效的原因，包括与其配套的脱节器失效、抽油杆断脱、泵漏、电动机不配套和生产管理不善等。为增强泵的提液能力和工作可靠性，提出5 项预防措施：(1)选择有充足供液能力的油井；(2)在保持相同泵效的情况下，泵的沉没度应略大于小泵，推荐按450～500m设计；(3)采用H级超高强度抽油杆柱，并在杆柱底部配置一定重量的加重杆；(4)采用长冲程、低冲次的参数匹配，推荐光杆冲程大于5m，冲次小于6min-1；(5)为提高泵筒、活塞和阀座的防腐耐磨性，推荐采用&氧化锆阀球和阀座+喷焊柱塞+氮化泵筒&的结构形式。

It uses advanced completion pipe string and sand fracturing pipe string in completion process to attain the goal of layer fracturing and selective zone production of the parent well and its branch.

XQ90井是我国在川西地区所钻成的第一口气井分支井组，该井在完井工艺上采用了先进的完井管柱和加砂压裂管柱，达到了主、分支井分层压裂，分层开采的目的；其自行研制的双管采气井口可以分别控制主、分支井井口油压，为后期的采气作业提供了可靠的保障。

The music by a three-string violin may not sound as harmonious as a four-string violin, yet it is more vigorous and more animated.

三支弦演奏出的曲子也许并不如四支弦的小提琴演奏出的曲子和谐动听，但是这支曲子更有活力，更有生命力。

The music by a three-string violin may not sound as harmonious as a four-string violin, yet it is more vigorous and more animated.

三支弦弹奏出的曲子也许并不如四支弦的小提琴演奏出的曲子和谐动听，但是这支曲子更有活力，更有生命力。

Based on the requirement of internal trade , oversea merchant and musical instrument jobber , we offer two kinds of string, in the main is our factory band string(top grade parper box pack/ medium grade hang bags pack/ common plastic bags pack), the other is the copy of famous band stringsincluding Daddario/ Fender/ Martin/ Yamaha etc.

另外，我厂为针对于国内/国外贸易商，乐器批发商，大琴行的需求，推出套弦两大类，主类为本厂品牌包装弦(高档纸盒包装/中档挂袋包装/普通胶袋包装)，辅类为高仿琴弦(达达里奥/芬达/马丁/雅马哈/等等)。

The first string is the help book name, and the second string is the help directory.

第一个字符串是帮助本书的名字，第二个字符串是帮助目录。

To insert second string in front of the first string, set both starting position and the length to 0

要将第二个字符串加於第一个字符串之前，将开始位置及长度为0

The guzheng is tuned to a pentatonic scale, the 16-string zheng is tuned to give three complete octaves, while the 21-string zheng has four complete octaves.

古筝是调整以五声音阶，16弦筝的调整，以使三个完整的八度，而二十一弦筝有四个完整的八度。

These operations let us deal with strings positionally and/or let us use arguments that are pointers to character arrays rather than strings.

程序员可通过这些操作基于位置处理 string 对象，并／或使用指向字符数组的指针而不是 string 对象作实参。

The predeclared string type is string.

这个提前声明的字符串类型就是字符串。

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％。