長度單位轉換

Length unit conversion
- Support multiple length conversion methods:
- 1. Metric -> Metric
  i) Mode 1:
      [km/km, meter, decimeter, centimeter, glutinous rice, micron, nanometer, Amy] -> [km/km, meter, decimeter, centimeter, glutinous rice, micron, nano, Amy]
  Ii) Mode 2: [km, m, dm, cm, mm, um, nm, Å] -> [km, m, dm, cm, mm, um, nm, Å]

- 2. Metric -> Imperial / American
  i) Mode 1:
      [km/km, meter, decimeter, centimeter, glutinous rice, micron, nanometer, Amy] -> [Rig, england, lang, chain, pole, yard, 噚, 呎, link, hand,吋, line, mil, 英丝]
  Ii) Mode 2: [km, m, dm, cm, mm, um, nm, Å] -> [league, mi, furlong, chain, rd, yd, fathom, foot, link, hand, inch, line, mil , thou]

- 3. Imperial / American -> Imperial / American
  i) Mode 1:
      [Rig, england, lang, chain, pole, yard, 噚, 呎, link, hand, 吋, line, mil, 英丝] -> [Rig, england, lang, chain, pole, Code, 噚, 呎, link, hand, 吋, line, mil, 英丝]
  Ii) Mode 2: [league, mi, furlong, chain, rd, yd, fathom, foot, link, hand, inch, line, mil, thou] -> [league, mi, furlong, chain, rd, yd, fathom , foot, link, hand, inch, line, mil, thou]

- 4. Inch / American -> Metric
  i) Mode 1:
      [Rig, england, lang, chain, pole, yard, 噚, 呎, link, hand, 吋, line, mil, 英丝] -> [km/km, meter, decimeter, centimeter, 亳Meter, micron, nano, amy]
  Ii) Mode 2: [league, mi, furlong, chain, rd, yd, fathom, foot, link, hand, inch, line, mil, thou] -> [km, m, dm, cm, mm, um, nm , Å]

- 99% 1 second out of the results, fast.

- Precision scientific calculations:
  (1) For an infinite decimal number, the 99.99% case shows more than 11 decimal places.
  (2) For a finite decimal number, the exact value is displayed in 99.99% of cases, and the last 0 bits are deleted after the decimal point is deleted.

- Suitable for working people, doing homework, self-study units.

- When it comes to foreign companies/projects involving length, the user can convert to a specified length unit to make a value.