选择线 meaning in English

select lines
selection line
selection wire
selectivity line

Larger keyboards require more select or sense lines .
键盘越大，需要的选择线或检出线越多。
Select the threading model
选择线程模型
We are capable of processing metal rods of as large as 15mm in diameter , and we can process rods of a wide range of sizes and materials , including iron , aluminum , and stainless steel
另外，可加工最大线径为15的线材，因此无需选择线径大小，也不用担心铁，铝，钢，黄铜之类的材质。