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solder sth to sth
solder sth to sth 表示把一物焊接到另一物上。
He soldered the wire to the circuit board.
他把电线焊接到电路板上。
焊料；焊锡
先理解核心含义，再看它在真实句子里的用法。
焊料；焊锡
a metal alloy, usually of lead and tin, that is melted and used to join metal surfaces
He soldered the wire to the circuit board.
他把电线焊接到电路板上。
各种易熔合金,通常为锡铅合金,用于修补、涂层或连接金属物体。
Any of various easily melted alloys, commonly of tin and lead, that are used to mend, coat, or join metal objects, usually small.
一种合金(通常是铅和锡),熔化后用于连接两个金属表面
an alloy (usually of lead and tin) used when melted to join two metal surfaces
将人或事物紧密联系的环境或情感。
Circumstances or emotions that strongly bond things or persons together, by analogy to solder that joins metals.
The plumber used solder to connect the copper pipes.
水管工用焊料连接铜管。
You need to heat the solder until it melts evenly.
你需要加热焊料，直到它均匀熔化。
Different solders are available for different metals.
针对不同金属，有不同种类的焊料。
solder sth to sth 表示把一物焊接到另一物上。
He soldered the wire to the circuit board.
他把电线焊接到电路板上。
together 强调两个或多个部件被焊接连接起来。
The technician soldered the two metal pieces together.
技术员把两块金属片焊接在一起。
solder 作及物动词时，直接接要焊接的物体。
You can solder the broken wire.
你可以焊接这根断了的电线。
Not this
I bought a solder for the repair.
Use this
I bought some solder for the repair.
solder 作名词指焊料时是不可数物质名词，不能用 a 修饰；表示“一些焊料”用 some solder。
Not this
He soldered the chip with the circuit board.
Use this
He soldered the chip to the circuit board.
动词 solder 表示把两个物体接合时，另一物体用介词 to（或 onto）引出；with 后接的应是焊接工具或焊料，不是被连接的物体。
Not this
She welded the broken wire back onto the speaker.
Use this
She soldered the broken wire back onto the speaker.
中文“焊接”可泛指，但英语中 weld 指用高温熔化金属工件本身，而 solder 指用低温焊料连接金属件；修复电路或细导线时常用 solder。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
无铅焊料
Many electronics manufacturers now use lead-free solder.
许多电子产品制造商现在使用无铅焊料。
焊点
A cold solder joint can cause intermittent electrical failures.
冷焊点会导致间歇性电气故障。
电烙铁
Heat the soldering iron to the correct temperature before use.
使用前将电烙铁加热到合适温度。
焊锡丝
The technician used thin solder wire for the delicate circuit board.
技术员用细焊锡丝来焊接精密电路板。
焊接到……上
Use a steady hand to solder the wires onto the connector.
手要稳，把导线焊接到连接器上。
焊接在一起
The plumber soldered the copper pipes together.
水管工把铜管焊接在一起。
Use solder naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
看到 solder 中的 old，想到老式烙铁加焊锡接合金属。
语域：neutral 常见场景：electronics repair、plumbing、metalwork solder 作名词时指用于连接金属的焊料（如焊锡）。该词是技术性常用词，多用于电子维修、管道作业或金属加工等具体场景，在日常口语和正式说明中都比较常见；没有明显的正式或非正式限制，语气中性。
solder 中的 l 在美式英语中不发音，读作 /ˈsɑdɚ/，与 odder /ˈɑːdɚ/ 押韵。注意拼写相似的 -older 词（folder、holder、bolder、older）读 /ˈoʊldɚ/，均不押韵；soldier /ˈsoʊldʒɚ/ 也是形近音异的词。
Dictionary facts from ECDICT, WIKTIONARY.