常見例句Although strain gage balances have been most useful in transonic and supersonic tunnels, they are by no means excluded from lowspeed work. 雖然,應(yīng)變天平最適用于跨超音速風(fēng)洞,但絲毫不意味著不能用于低速實驗。The shrinkage variance PET filament having different heated history was produced by Model 420 lowspeed spinning machine and M402 drawing-twister with semi-dull PET chip. 利用常規(guī)PET切片和420低速紡絲機、M-402牽伸機制取具有不同熱歷史的異收縮絲。It adopts lever feed mecha_nism and the angle of feed dog can be adjusted.So it re-duces the different of stich lenget between high and lowspeed or normal feed and reverse feed .It also adopts. 該機為獲得理想的縫制效果,采用連桿送料及布牙傾角可調(diào)機構(gòu),最大限度減少了高低速,倒順縫紉只的針距誤差,同時為確保機器運轉(zhuǎn)是有可靠的潤滑,又配置了新穎的 齒輪泵供油系統(tǒng)。Although strain gage balances have been most useful in transonic and supersonic tunnels, they are by no means excluded from lowspeed work 雖然,應(yīng)變天平最適用于接近音速和跨超音速風(fēng)洞,但絲毫不意味著不能用于低速實驗。 返回 lowspeed