In the international market, China's rice competitive edge is dull, far less than its market share and some small grain production.
在国际市场上，我国大米的竞争力不强，其市场占有率远不及一些粮食生产小国。
It is diffiuclt for brown rice grain to make standard sample because of its small size and irregular shape, and so its elastic modulus is hardly determined by conventional methods.
稻米籽粒由于尺寸小、形状不规则，难以制成标准试件，因此，不便于采用常规方法测其弹性模量。
Lots of nematodes were found in rice with small grains and erect panicle but there was no nematode in normal grain seeds.
经室内检测，发现“小穗头”谷粒中含有大量的线虫，而健康稻穗的谷粒中不含线虫。
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