four groove drill是什么意思

网络释义

用法例句

Because of the lower rock fragmentation efficiency and defective geometrical shape of chisel bit, Sweden has replaced chisel bit with taper connecting cross chisel bit and button bit since the mid seventies.

因一字形钎头破岩效率低和几何形状结构缺陷等问题，瑞典从７０年代中期就用锥体连接的十字和球齿钎头取代了一字形钎头。

Now, we propose that chisel bit is renewed with more advantageous composite cutter bit gradually.

现在，我们建议用更具优势的复合片齿钎头逐步更新一字形钎头。

Bonding process of pure copper with amorphous Cu-P interlayer

非晶Cu-P钎料钎焊接头形成过程

Results indicated that, within certain range, the joint strength increased with the increase in weld thickness.

试验发现,在一定钎缝厚度范围内,随着钎缝厚度的增加,接头强度随之提高.

A pyramid of stones marked the spot.

那地点用一堆堆成金字塔形状的石头作了标记。

diagonal cut rock drill plus bits

对角十字形岩石钻头

cross-bladed chisel bit

十字刮刀楔形齿钻头

Phase Constitution of Soldering Seam and Mechanical Properties of Zn Matrix Filler Metal Soldering Magnesium Alloy AZ31B Joint

Zn基钎料钎焊镁合金AZ31B接头的钎缝物相及力学性能

One of the triangular characters of cuneiform writing.

楔形字楔形方字的三角形字之一

Research on the Properties and the Interfacial Reactions of Sn-Zn-Cu(Ni) Lead-free Solders;

Sn-Zn-Cu（Ni）无铅钎料及其钎焊接头界面反应研究

Effect of Cr on Property of Stainless Steel Joint Brazed with Series Ni-P Filler Metal

Cr对Ni-P系钎料钎焊不锈钢接头性能的影响

Microstructure and Mechanical Property of Joint by Amorphous Fillers

非晶镍基钎料钎焊接头性能及微观组织的研究

Microstructure of Soldering Joint of Rapidly Solidified Sn2.5Ag0.7Cu Solder Alloy

快速凝固态Sn2.5Ag0.7Cu钎料钎焊接头的显微组织

Study on Soldering Procedure and Joint Properties of Down Quenching SnAgCu Solder Alloy

急冷型SnAgCu系钎料合金钎焊工艺及接头性能研究

bit cutting angle

钻冠的尖度，钻头磨角，钎子头刃角

The men and women of the older generation formed a semicircle on the velvet carpet and kowtowed to one another.

克字辈的人由周氏领头，围成一个半圆形，在红毡上拜下去，互相道贺。

drill(ing) head

钻头; 主轴头; 钻床床头箱; 钻削动力头;钻头头部, 钎头

engraving miller for working metal numerically controlled

雕刻钎削机,用于金属加工,数字控制式

Carbide detachable bit for rock drilling

GB/T6480-1994凿岩用硬质合金钎头