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1·It is better to find out at this point than after you start soldering.

这时检查，要比开焊之后才发现靠谱。

2·It has low melting point and good wettability to the base-metal, and contains a high-strength and high-hardness solid solution structure, with a high strength of soldering joint.

该钎料具有熔点低，对母材的润湿性好，钎焊接头组织中含有强度、硬度较高的呈弥散分布的固溶体，以及接头强度较高等特点。

3·This article mainly introduces the excellent features of low melting Point solder which is used for aluminium soldering. This solder is the new Product researched and developed recently.

本文主要介绍新研制成功的铝钎焊用低熔点焊料的优良性能。

4·The head center of the soldering iron head is provided with a centering pin positioned at the center point of the circular ring circle and rising a little altitude than the circular ring plane.

在所述烙铁头的头部中心有一定心针，该定心针位于圆环的圆心处，高度略微高出圆环平面。