Meanwhile, the Penjing plants must be grown in greenhouses with mesh screening of less than 1.6 mm 2 years before export, and 0.6 mm 6 months before export.

同时，出口前2年须种植在网径小于1.6毫米的网室中，出口前6个月须种植在网径小于0.6毫米的网室内。

youdao

If you have high blood pressure, cutting back on booze could produce a small but significant drop of 2 to 4 mm Hg systolic (the top number) and 1 to 2 mm Hg diastolic (the bottom number).

如果你有高血压，那么当你减少饮酒量时，可以使心脏收缩压有很小但又有意义的下降，可以下降2 - 4毫米汞柱(上面的数即分子数值)，以及心脏舒张压下降1 - 2毫米汞柱(下面的数即分母数值)。

youdao

You want to make holes close to the ribbon but not too close, give them room to breathe, maybe 1 or 2 mm.

针孔尽量靠近固定的带子，但也不要太靠近，要留一点空，大约一两毫米。

youdao

The city, which attracts millions of tourists every year, is seeing sea-level rises of around 2 mm per year, together with slow, mostly natural, subsidence of about another 2 mm every year.

CNN: New satellite data reveals sea-level rise

Last week Hitachi GST said that it had shipped 25 million 7-mm thick 2.5-inch HDDs.

FORBES: Hitachi GST -- Last Hurrah for A Hard Disk Pioneer?

The UE 6.9 brings pretty much the same network coverage, cam, Bluetooth, media capabilities, and on-board memory as the 9.9 but had to forgo the microSD card and flash while dropping down to a 1.9-inch 176x220 262k TFT display in order to slip into that world's slimmest, 6.9-mm, 2.33-ounce dress.

ENGADGET: Samsung's Ultra Edition 9.9, 12.9, 6.9: World's slimmest cellphones launched