敲桿 的英文怎麼說
中文拼音 [qiāogǎn]
敲桿
英文
rapping bar-
Then he rapped on the door with a bit of stick like a handspike that he carried.
后來，他用隨身帶著的一根推桿樣的棒子重重地敲門。The reassigned smoothed pseudo wigner - ville distribution ( rspwvd ) is introduced, which has less interference and higher resolution than other time frequency distributions like wigner - ville, choi - williams etc. it is used to detect the multi - knocking of engine such as cylinder, piston pin, valve, crank bearing, connecting rod bearing and jib knocking. a new fault diagnosis technique based on the rspwvd for the engine multi - knocking problem is proposed. by comparing the bispectrum and bicoherence of the gear vibration signals, it is demonstrated that bispectrum has an advantage over bicoherence for feature extraction of such signals
第四章首次引入一種重分配方法，得到干擾項少而解析度高的重分配平滑偽魏格納維爾分佈（ rspwvd ） ；對發動機曲軸主軸承響、連桿軸承響、活塞銷響、活塞敲缸響、氣門響和挺桿響等常見機械異響故障振動信號特徵進行了全面地比較分析；通過對各種異響故障特徵信號的分析研究，提出基於rspwvd的發動機多異響故障診斷策略，利用該策略可以準確識別不同的發動機異響故障。When both genes were co - expressed in e. coli, the activity of ppsa varied from 2. 1 - 9. 1 fold comparing to control, but the activity of tkta was relatively stable ( 3. 9 - 4. 5 fold ). whatever the two genes were expressed respectively or cooperatively, both could promote the production of dahp, the first intermediate of the common aromatic pathway, but co - expression was more effective on forming dahp and screened ppt - and ptp - as more effective. the results demonstrate that co - expression of ppsa and tkta can improve the production of dahp, and what ' s more, when multigenes co - expressed, the recombinant which has coordinated enzymes activity is optimum
莽草酸途徑的最優化和整體調控基因csra的敲除正是上述改變的分子基礎，同時也為三種芳香族氨基酸的基因工程菌的構建打下了基礎; 7 .在國內外首次實現了共同途徑限制性底物關鍵酶ppsa刁無『及arog與分支途徑關鍵酶基因phea的串聯高效表達，所構建的重組質粒ptga ，其ppsa 、 tkta 、 arog 、 cm和pd的酶活分別比對照提高了3 、 2 、 2 ， 5 、 4 、 2 . 3倍，且其酶活比較協調一致; 8 .將ptga導入到篩選的基因敲除和基因替換菌株大腸桿菌31884 c甲b中，搖瓶發酵證實比以往所構建的基因工程菌株具有較高的phe產量和糖轉化率率，分別為0 . 448 %和22 . 4 % 。A hinged fixture, such as a metal ring or bar, used for knocking on a door
門環供敲門用的有鉸鏈的固定物，比如金屬環或桿，Private equity groups are clinching deals that have relatively small takeover premiums to their targets ' recent share price highs, a survey will reveal today, adding weight to complaints that investors are being short - changed in leveraged buy - outs
一項調查今天將顯示，私人股本集團在近來敲定的交易中，只支付了較目標公司近期股價高點相對較低的收購溢價，這為人們的抱怨增加了砝碼，即：投資者在杠桿收購中所得到的好處被打了折扣。Height metallic strokes shiver the morning air and from a nearby hill a stricken figure rivets involuntary eyes on the flag - staff of a sullen cage of a building
八下金屬的敲擊聲在清晨的空氣中顫抖，附近小山上的一個精神恍惚的人木然凝視著一座建築物的一間陰沉的牢房上的旗桿。分享友人