通(Tong)过(Guo)对(Dui)导(Dao)热(Re)油(You)倾(Qing)点(Dian)或(Huo)凝(Ning)固(Gu)点(Dian)的(De)测(Ce)定(Ding)来(Lai)确(Que)定(Ding)导(Dao)热(Re)油(You)的(De)可(Ke)流(Liu)动(Dong)性(Xing)，(?)在(Zai)接(Jie)近(Jin)倾(Qing)点(Dian)或(Huo)凝(Ning)固(Gu)点(Dian)时(Shi)导(Dao)热(Re)油(You)由(You)于(Yu)将(Jiang)失(Shi)去(Qu)其(Qi)流(Liu)动(Dong)性(Xing)而(?)不(Bu)能(Neng)被(Bei)使(Shi)用(Yong)。(?)通(Tong)常(Chang)，(?)如(Ru)果(Guo)一(Yi)台(Tai)换(Huan)热(Re)设(She)备(Bei)需(Xu)要(Yao)在(Zai)更(Geng)低(Di)的(De)温(Wen)度(Du)条(Tiao)件(Jian)下(Xia)启(Qi)动(Dong)，(?)首(Shou)先(Xian)就(Jiu)要(Yao)使(Shi)导(Dao)热(Re)油(You)的(De)流(Liu)动(Dong)特(Te)性(Xing)达(Da)到(Dao)系(Xi)统(Tong)启(Qi)动(Dong)时(Shi)的(De)流(Liu)动(Dong)要(Yao)求(Qiu), 例(Li)如(Ru)，(?)对(Dui)设(She)备(Bei)及(Ji)管(Guan)线(Xian)伴(Ban)热(Re)或(Huo)利(Li)用(Yong)附(Fu)加(Jia)的(De)加(Jia)热(Re)装(Zhuang)置(Zhi)对(Dui)导(Dao)热(Re)油(You)进(Jin)行(Xing)加(Jia)热(Re)。(?)由(You)于(Yu)导(Dao)热(Re)油(You)的(De)流(Liu)动(Dong)性(Xing)会(Hui)对(Dui)其(Qi)自(Zi)身(Shen)的(De)泵(Beng)送(Song)性(Xing)能(Neng)和(He)系(Xi)统(Tong)的(De)传(Chuan)热(Re)性(Xing)能(Neng)产(Chan)生(Sheng)影(Ying)响(Xiang)，(?)所(Suo)以(Yi)应(Ying)对(Dui)导(Dao)热(Re)油(You)在(Zai)不(Bu)同(Tong)温(Wen)度(Du)条(Tiao)件(Jian)下(Xia)的(De)粘(Zhan)度(Du)予(Yu)以(Yi)适(Shi)当(Dang)考(Kao)虑(Lu)，(?)并(Bing)对(Dui)最(Zui)低(Di)环(Huan)境(Jing)温(Wen)度(Du)条(Tiao)件(Jian)下(Xia)的(De)粘(Zhan)度(Du)加(Jia)以(Yi)限(Xian)制(Zhi)。(?)

日(Ri)升(Sheng)牌(Pai)L-Q系(Xi)列(Lie)导(Dao)热(Re)油(You)的(De)泵(Beng)送(Song)性(Xing)好(Hao)，(?)粘(Zhan)度(Du)适(Shi)宜(Yi)，(?)在(Zai)兼(Jian)顾(Gu)了(Liao)传(Chuan)热(Re)效(Xiao)率(Lu)及(Ji)安(An)全(Quan)性(Xing)的(De)前(Qian)提(Ti)下(Xia)，(?)具(Ju)有(You)优(You)良(Liang)的(De)低(Di)温(Wen)启(Qi)动(Dong)性(Xing)和(He)泵(Beng)送(Song)性(Xing)。(?)尤(You)其(Qi)是(Shi)在(Zai)环(Huan)境(Jing)温(Wen)度(Du)低(Di)的(De)条(Tiao)件(Jian)下(Xia)，(?)仍(Reng)具(Ju)有(You)良(Liang)好(Hao)的(De)流(Liu)动(Dong)性(Xing)，(?)适(Shi)宜(Yi)在(Zai)北(Bei)方(Fang)极(Ji)寒(Han)地(Di)区(Qu)全(Quan)天(Tian)候(Hou)使(Shi)用(Yong)。(?)

上(Shang)一(Yi)篇(Pian)：(?)导(Dao)热(Re)油(You)炉(Lu)的(De)点(Dian)火(Huo)、(?)升(Sheng)温(Wen)！(?)

下(Xia)一(Yi)篇(Pian)：(?)导(Dao)热(Re)油(You)的(De)最(Zui)高(Gao)允(Yun)许(Xu)使(Shi)用(Yong)温(Wen)度(Du)是(Shi)如(Ru)何(He)确(Que)定(Ding)的(De)?