查询词典 hack hammer

Furthermore, authors statistic actual impacting times in the local by various types of hammer when the pile drives into the different depth of the bearing stratum, it may offer the reference for the similar engineering to choose the hammer in the future.

因此，如何对该类型的桩进行合理沉桩分析，是桩基施工中急待解决的问题。 2沉桩阻力在沉桩施工的过程中，桩锤的冲击力应大于土层的沉桩阻力，桩才能顺利下沉。

The dynamical and kinematic specialty of hydraulic hammer is analyzed during piling. At the same time, the mathematical model is presented of each process. Based on mathematical model of each stage, simulation and analysis is made. The changing rule of displacement, velocity, acceleration can come to a decision from simulation plot during falling process of pile hammer.

提出桩锤在各个打击过程中的数学模型，并对各阶段进行仿真及分析，研究桩锤下打过程中，桩锤位移、速度、加速度变化规律，为进一步研究生产样机提供了理论依据。

Studying on the hydraulic pipelines of the nitrogen-inflating hydraulic pile hammer, establishes a optimization objective function for it with the relevant methods of parameter optimization, and uses Matlab to solve the model, gets a group of optimization pipelines size, and tests the validity of this method. So more efficiency methods for hydraulic system design of the nitrogen-inflating hydraulic pile hammer are provided.

以氮爆式液压打桩锤液压管道为研究对象，应用参数优化设计的相关方法建立氮爆式液压打桩锤管路优化分析的目标函数，并利用Matlab编程对模型进行求解，得出一组优化后的管道尺寸，并检验这种优化方法的有效性，为氮爆式液压打桩锤液压系统的设计开发提供了更为有效的方法。

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。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。