Undersize crankshaft main bearing journals.

尺寸小于标准的凸轮轴主轴承轴颈.

Bolts with drilled or undersize heads shall not be used.

被钻孔或头部尺寸太小的螺栓不能使用.

Undersize forwards who can't rebound or defend their position?

小个子的锋位，不能抢篮板也不能完成防守。

A gear with an oversize bore or a pinion with an undersize shank must be mounted on or in the arbor, respectively.

轴孔尺寸过大的齿轮或轴柄尺寸过小的齿轮轴必需分别塞上或塞进衬套（心轴）。

Without changing the tare on the balance, remove the undersize microspheres that have fallen through and reweigh the sieve assembly with the retained microspheres.

在不改变重量平衡的条件下，消除尺寸不足的微粒并重称集合的分子筛和保留下来的微粒。