查询词典 a pair of

Therefore, the torque required to open the gate valve required torque than the closure of large, in addition, for a pair of contact between the sealing surface, the Non Rising Stem Resilient Seated Gate Valves coefficient of static friction between them than the dynamic friction coefficient, to make them from the static state generate the relative movement is required to exert greater force to overcome the static friction; due to temperature changes, so that the sealing surface pressure between the larger, need to overcome the static friction force also will be bigger, so that when you open the valve on the stem nut on the sometimes increase the torque exerted a lot.

所以，开启闸阀所需的力矩比关闭闸阀所需的力矩大，此外，对于一对互相接触的密封面来说，它们之间的静摩擦系数也比动摩擦系数大，要使它们从静止状态产生相对运动，需施加较大的力以克服静摩擦力；由于温度变化，使密封面间的压力变大，需要克服的静摩擦力也随之变大，从而使开启闸阀时，对阀杆螺母上施加的力矩有时会增大很多。" Moment analysis of valve operation "是由中国闸阀网提供的国际阀门新闻，译文仅供参考。另外，中国闸阀网还提供相关产品搜索：闸阀型号、闸阀价格、闸阀技术、闸阀新闻、闸阀生产商等。

In the rhombohedron, each top site is occupied by a pair of ligand-unsupported Ag atoms which are surrounded by six phenol groups in an ethane-like structure. The phenol groups at another ends of the ligands bridge the rhombohedrons into novel non-interpenetrating three-dimensional network.

在每个棱柱体内，每个顶点由无桥连配体支持的、周围的六个酚羟基以一种不寻常的、类似于乙烷分子结构的扭曲方式排列的一对 Ag 原子占据，配体另一端酚羟基将棱面体连接成新颖的非穿插的具有棱形通道(沿 a 和 b 轴方向)的三维网络结构。

From out of nowhere, Nike comes out with the Sidewinder - a pair of slippers that combine the rugged durability of the ACG line, with the environmentally-conscience Considered technology.

从走出行不通的，耐克出来与响尾蛇-拖鞋相结合的坚固耐用的a cg路线，与环保良知考虑技术。

My father has small eyes,Wear a pair of glasses,looking more gently,the daddy's hair are not many, he said "the intelligent head does not grow hair",daddy does the management, but daddy usually ever not talk bureaucratically to others, therefore his personal connection is specially good,is the same as me.daddy speaks always extremely temperately,never say hit the person,curse at people are also few,calculated scolded people not to be big, although sometimes also can be angry for a longtime,but just only about one day,could no surpass in one day-long.He usually educate me that the person must to be honestly,friendly to other,and working diligently.

我的父亲富人狭窄部分eyes磨损a结对的眼镜看更多轻柔爸爸's头发是不很多他假定聪明头儿做不成长头发，daddy做管理但是爸爸通常曾经不说话官僚地向其他的因此他的个人联系是特别好是同样的同样me.daddy说话总是极其温和地从不发言权受到打击人咒骂在人物是也很少一点计算责骂人物不向是大量地虽然有时也能对于一长时间的但是仅仅仅请生气活动中的一天是不能在中超越一天长他通常教育我那人必须去诚实是对其他的友好和勤奋工作。

Acute tetanization (60 Hz, 2 s, 0.4－0.6 mA) of the right posterior dorsal hippocampus was used to induce hippocampal epilepsy. The single unit discharges and the depth electrographs were synchronously recorded with a glass microelectrode and a pair of stainless concentric electrodes in the ipsilateral anterior dorsal hippocampus.

急性强直电刺激大鼠右侧后背HPC CA1基树突区(acute tetanization of the posterior dorsal hippocampus， ATPDH； 60 Hz， 2 s ， 0.4－0.6 mA)诱发HPC癫痫模型，同步记录同侧前背HPC CA1顶树突区单位放电和基树突区深部电图。

The avian influenza virus RNA was directly extracted and purified from chicken em-bryo allantoic fluid. According to published gene sequence,a pair of specific primers to the nucleoprotein gene of AIV was designed and synthesized. After that,the NP cDNA was amplified by RT-PCR .Then the complete NP gene was sequenced.

直接从鸡胚尿囊液中提取H9N2亚型禽流感病毒的RNA，并根据已发表的A型流感病毒株的核苷酸序列，设计了1对特异引物，采用RT-PCR技术成功地扩增了AIV的NP基因；将NPcDNA克隆后进行了序列测定。

Flower sex expression of monoecious lines (ATA-A and ATA-B) and andromonoecious lines and their offsprings (F1 and F2 and BC1) was investigated. Results showed that the flower expression character of that monoecious lines of melon was controlled by a pair of genes at one single locus,and the Monoecious character was controlled by the dominant gene.

通过对甜瓜单性花系ATA-A、ATA-B及他们的杂交后代F1、F2、BC1的花性型分离情况进行统计分析研究后认为，甜瓜单性花性状由一对基因控制的质量性状，单性花性状由显性基因所控制，其遗传符合孟德尔遗传规律。

I've got a Pair of aces.

我得一对A。

In the third chapter, author takes a pair of mixed marriage (serving Sunan II School Tibetan teacher A and Yugur teacher B) to track the interview and make oral record of process of school-based curriculum development, and recommends the specific implementation and universalizes school-based curriculum research and development knowledge, fully reflects the expansion of school-based curriculum development and sustainability.

在第三章中，笔者就校本课程研发过程对异族通婚的教师夫妻(任职肃南二中的藏族教师A和裕固族教师B)进行跟踪访谈和口述实录；对全体研发人员在校本课程教材的资料搜集、整理及编制过程中的体会进行问卷统计分析，并提出校本课程评价、校本课程成果推广及校本教材实施的具体的操作性建议。

Starting from the feet and working up, I'm wearing: a pair of cotton socks, with a pair of thermal socks over them; a pair of ankle-high Gore-Tex boots; a set of thermal long-johns; a pair of jeans; a thermal undershirt (a present from a worried family member); a long-sleeved T-shirt; a tight-fitting cashmere jumper; a fleece; a padded winter coat with hood; a thin pair of woollen gloves (so that when I take the outer pair off to take photographs I won't expose naked flesh); a pair of gloves made of wool and Thinsulate; a wool scarf; and a woolly football hat.

我从脚上到头顶穿的是：一双棉袜、外套一双保暖袜；一双到脚踝的 Gore-Tex 牌靴子；一套保暖长内裤；一条牛仔裤；一件保暖内衣（这是一位不放心的家人送的礼物）；一件长袖 T 恤；一件紧身高领羊绒衫；一件羊皮茄克；一件带垫衬和帽子的冬大衣；一双薄羊毛手套（这样我把外层手套脱下拍照的时候，手不会暴露在外）；一双用羊毛和保温材料做的手套；一条羊毛围巾；一顶羊毛足球帽。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。