口螺

Objective:To study the relationship between helicobacter pylori infection and perioral dermatitis.

摘 要 目的：研究幽门螺杆菌感染与口周皮炎的关系。

Therefore, in order to screw suction port separated from the oil discharge screw thread section is greater than the length of at least one lead.

因此，为了使螺杆能吸、排油口分隔开来，螺杆的螺纹段的长度至少要大于一个导程。

Therefore, in order to enable the screw to smoke, Pai oil separated from the mouth, screw thread length is greater than at least one lead.

因此，为了使螺杆能吸、排油口分隔开来，螺杆的螺纹段的长度至少要大于一个导程。

The 7 d-KBCF of Galba pervia to TPT at 10 and 20 μg·L-1 was 2 648,1 377,respectively.The 7 d-KBCF of Tubifex tubifex to TPT at 10,20 μg·L-1 was 41.7,48.7,respe...

同时还研究了三苯基锡对羽摇蚊幼虫口器和小锥实螺螺卵孵化的致畸作用。

High frequencies of solitary snails, slender shell morphology, small females and low fecundities were character of snails on the branching Porites.

在分枝状微孔珊瑚上的紫口珊瑚螺大部分单独存在、个体大小变异较小且比例上壳的形态较窄、雌螺较小且总卵鞘面积较小。

A change in single-screw pump suction valve opening degree, when the suction vacuum is small, pump parameters changed little, and when the suction vacuum is larger, the pump working conditions deteriorated dramatically.

改变单螺杆泵吸入口阀门开启度，当吸入口真空度较小时，泵特性参数变化不大，而当吸入口真空度较大时，泵的工作状况急剧恶化。

The structure brief introduction the dense thick liquid pump of one stud of i-1b s series is formed by four parts electromotor , shaft coupling , pump and bases motive force joining in marriage usefulness uses y s series asynchronous electromotor of three-phase the shaft coupling uses the water pump with the paw mould elasticity shaft coupling the pump by the pump shell , become hollow inside axle and universal twists joints and winds axle , stud , bush and axle seal and package places and goes out the material mouth etc and forms , and the section of stud is the oval for round and bush section , and his interior surface is the duplexing spirals faces .

结构简介 i-1b系列单螺杆浓浆泵由电动机、联轴器、泵和底座四个部分组成。配用的动力采用y系列三相异步电动机。联轴器采用水泵用爪型弹性联轴器。泵由泵壳、空心轴、万向绞接头、绕轴、螺杆、衬套、轴封装置和出料口等组成，螺杆的断面为圆形、衬套断面为椭圆形，其内表面为双螺旋面。

THIS WHITE CONCH TRUMPET WAS PRECIOUS GIFT BESTOWED TO THE DALAI LAMA BY THE EMPEROR QIANLONG ,AFTER VERY CAREFUL AND REFINED WORK ,THE MOUTH RIM WAS MOUNTED WITH GOLD AND INLAID WITH JEWELRY ,THE MATCHING COLOUR AND DESIGNS MAKE THE WHITE CONCH MORE BEAUTIFUL .

这件白海螺是乾隆皇帝赠给达喇嘛的珍贵礼品。海螺经过了精心加工口沿镶金，金口的装饰纹样间镶嵌珠宝，与洁白的海螺相配，相得益彰。海螺内刻乾隆题赞：洪海之螺，梵天之器。以鸣呗唱，满字半字。

Therefore, in order to enable the screw to smoke, Pai oil separated from the mouth, the screw thread section of the length of at least larger than a lead.

因此，为了使螺杆能吸、排油口分隔开来，螺杆的螺纹段的长度至少要大于一个导程。从上述工作原理可以看出，螺杆泵有以下优点

Therefore, in order to enable the screw to smoke, Pai oil separated from the mouth, screw thread length is greater than at least one lead.

因而，替了使螺杆能呼、排油口合隔启往，螺杆的螺纹段的少度至多要小于一个导程。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。