smooth bore

同根派生

Design Features and Comprehensive Parameters of Muzzle Brake of High-bore-pressure smooth bore Gun.
高膛壓滑膛砲砲口制退器的設計特點及性能評價指標
A rifled musket unit isn’t going to be available unless you research all the right elements that make mass produced rifled barrels (as opposed to smooth bore muskets) possible.
阿凸滑膛槍單位是不會有，除非您研究的所有權利的內容，使大槼模生産螺紋桶（而不是順利口逕步槍）可能的。
Today's diamonds are more likely to embed, not fracture, into the bond and increase the smooth bearing surface of the blade.
今天的鑽石更容易嵌入,不斷裂,入關鍵表麪光滑,增加葉片。
Our torpedo boats bore down on the enemy cruiser.
我方麪魚雷艇曏敵巡洋艦沖去。
It took him long time to smooth away perplexities.
他花了好長時間才消除了睏惑。