查询词典 percussion hammer

Following the 2001 corporate DZJ series of new high-tech industries vibration hammer pile of projects passed the provincial-level identification of acceptance, in July 2002 DZJ series of new vibration pile hammer by the National Ministry of Science and Technology included in the national Torch Program.

继2001年公司承担的DZJ系列新型振动桩锤高技术产业化工程项目顺利通过了省级鉴定验收后，2002年7月DZJ系列新型振动桩锤被国家科学技术部列入国家级火炬计划。

That is an air powered grinder (portablegrinder, angle grinder, straight grinder, drill, impact wrench,riveting hammer, hammer drill).

那是一个气动砂轮机（手持砂轮机、角型砂轮、直型砂轮、钻机、冲击扳手、铆钉锤、锤钻机）。

That is an air powered grinder (portable grinder, angle grinder, straight grinder, drill, impact wrench, riveting hammer, hammer drill).

第 20 页共 39 页那是一个气动砂轮机(手持砂轮机，角型砂轮，直型砂轮，钻机，冲击扳手，铆钉锤，锤钻机)。

That is an airpowered grinder(portable grinder,angle grinder,straight grinder,drill,impact wrench,riveting hammer,hammer drill).

那是一个气动砂轮儿机(手持砂轮儿机、角型砂轮儿、直型砂轮儿、钻机、冲击扳手、铆钉锤、锤钻机)。

That is an air powered grinder (portable grinder, angle grinder, Page 49 of 76 工程建设现场英语五百句 straight grinder, drill, impact wrench, riveting hammer, hammer drill).

那是一个气动砂轮机(手持砂轮机，角型砂轮，直型砂轮，钻机，冲击扳手，铆钉锤，锤钻机)。

V' y2 _1 {9 f q2 W 344、That is an air (electric powered grinder (portable grinder, angle grinder, straight grinder, drill, impact wrench, riveting hammer, hammer drill).

P- e2 y' f 那是一个气动砂轮机（手持砂轮机、角型砂轮、直型砂轮、钻机、冲击扳手、铆钉锤、锤钻机）。

The agricultural stage tool is: Ox cart, horse-drawn vehicle, hammer,hammer.

农业时代的工具是：牛车，马车，锤子，榔头。

Hammer: A hammer striking a steel plate is used as seismic source for shallow refraction measurements.

冲击锤：浅层折射法中用于锤击钢板来作为震源的锤。

Studied smashing characteristic of corn straw,including mainly performance parameter of pulverizer such as consumption of electricity per ton,hammer patch thick and output per kW·h under the condition of different moisture rates, sieve pore diameter and hammer number.

对不同含水率、筛孔直径、锤片数量下玉米秸秆粉碎机的吨料电耗、锤片厚度及度电产量等性能参数进行了试验研究。

So if we set up an anti-water hammer tank in the pipeline,the water-hammer phenomenon can be eliminated.

在管路中安装了消水锤罐，就可消除水锤现象。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。