Chapter 2 温度（夜晚）

Figures and tables with captions can also be cross-referenced from elsewhere in your book using \@ref(fig:chunk-label) and \@ref(tab:chunk-label), respectively.

See Figure 2.1.

par(mar = c(4, 4, .1, .1))
plot(pressure, type = 'b', pch = 19)

Plot with connected points showing that vapor pressure of mercury increases exponentially as temperature increases.

Figure 2.1: Here is a nice figure!

Don’t miss Table 2.1.

knitr::kable(
  head(pressure, 10), caption = 'Here is a nice table!',
  booktabs = TRUE
)

Table 2.1: Here is a nice table!
temperature	pressure
0	0.0002
20	0.0012
40	0.0060
60	0.0300
80	0.0900
100	0.2700
120	0.7500
140	1.8500
160	4.2000
180	8.8000